Just how large is the UK economy and how rapidly is it growing? These were questions we asked, back at the turn of the year, in Getting real with GDP when reviewing economic data for the third quarter of 2010. We update this blog in light of the latest Quarterly National Accounts release from the Office for National Statistics.
The latest Quarterly National Accounts release estimates the value of our economy’s output during Q1 of 2011 at £375.3 million. When measured across the latest four quarters, i.e. from the start of Q2 2010 to the end of Q1 2011, the total value of our economy’s output was £1.472 trillion. Across calendar year 2010 the UK’s GDP is estimated to have been £1.455 trillion.
When analysed in terms of the total expenditure on the goods and services produced in the latest four quarters, household final consumption contributed £931 billion of Gross Domestic Product. In other words, household expenditure over these four quarters was equivalent to 63% of GDP, almost exactly in line with its average since 1948. This demonstrates the importance of spending by households for short-term economic growth. Households help to shape the business cycle.
Another important expenditure-component of GDP is gross capital formation. This is capital expenditure by the private and public sector and is estimated to have been £219.6 billion over the latest four quarters, equivalent to 15% of GDP. As well as affecting current levels of GDP, gross capital formation also affects our economy’s potential output. In other words, changes in capital expenditure can impact both on the demand-side and the supply-side of the economy. Interestingly, the long-term average share for gross capital formation in GDP is around 18% and so about 3 percentage points higher than is currently the case.
So far we have looked at the level of economic activity measured at current prices. But, what about the rate at which the economy is growing? When analysing the rate of economic growth economists look at GDP at constant prices. By doing this economists can infer whether the volume of output has increased. This is important because in the presence of price rises, an increase in the value of output could occur even if the volume of output remained unchanged or actually fell. For instance, in 1974 the volume of output or real GDP fell by 1.3%, but because the average price of our domestic output – the GDP deflator – rose by 14.9%, GDP measured at current prices rose by nearly 13.4%.
The latest ONS figures show that in the first quarter of 2011 real GDP grew by 0.5% (nominal GDP grew by 1.7%). This follows a 0.5% fall in real GDP the final quarter of 2010 (nominal GDP grew by 1.2%). Compared with Q1 2010, the volume of output of the UK economy in Q1 2011 is estimated to have grown by 1.6%.
Exports were the fastest growing component of aggregate demand in Q1, rising in real terms by 2.4%, while import volumes decreased by 2.4%. Export volumes in Q1 were 9.3% higher than a year earlier. In contrast, capital expenditures contracted sharply in the first quarter, falling by 4.2%. This follows on the back of a 0.6% fall in the final quarter of last year. This has reversed much of the strong capital expenditure growth seen during the earlier part of 2010.
We finish by looking at the growth in household spending. In the first quarter of the year real household spending fell by 0.6%. This follows a 0.2 fall in Q4 2010 and zero growth in Q3 2010. This helps to explain some of the difficulties that particular retailers have faced of late. Some context to these disappointing consumption numbers is provided by patterns in household sector disposable income. The sector’s disposable income fell by 0.8% in Q1 2011 which follows on from a 0.9% fall in the last quarter of last year. The result of this is that the household sector’s real disposable income in Q1 2011 was 2.7% lower than in Q1 2010. This was the fastest annual rate of decline since the third quarter of 1977.
Articles
Household incomes sees biggest fall since 1977 BBC News (29/6/11)
UK service sector sees biggest fall for 15 months BBC News (28/6/11)
UK economic growth revised down BBC News (29/6/11)
Service sector output slumps Guardian, Phillip Inman (29/6/11)
Household raid savings as income squeezed Independent, Sean O’Grady (29/6/11)
Poor GDP numbers add pressure on Osborne Guardian, Phillip Inman (28/6/11)
UK economy suffers blow as tepid growth confirmed Telegraph (28/6/11)
Service sector slumps deals heavy blow to economic recovery hopes Scotsman, Natalie Thomas (30/6/11)
Data
Latest on GDP growth Office for National Statistics (28/6/11)
Quarterly National Accounts, 1st Quarter 2011 Office for National Statistics (28/6/11))
ONS Time Series Data Office for National Statistics
For macroeconomic data for EU countries and other OECD countries, such as the USA, Canada, Japan, Australia and Korea, see:
AMECO online European Commission
Questions
- What do you understand by the terms nominal GDP and real GDP?
- Can you think of any other contexts in which we might wish to distinguish between nominal and real changes?
- The following are the estimates of GDP at constant 2006 prices:
Q1 2011= £330.724bn, Q4 2010= £329.189bn, Q1 2010= £325.360bn Calculate both the quarterly rate of change and the annual rate of change for Q1 2011.
- What would happen to our estimates of the level of constant–price GDP in (3) if the base year for prices was 1996 rather than 2006? What if the base year was 2011? What would happen to the quarterly and annual growth rates you calculated in each case? Explain your answer.
- Explain how gross capital formation could have both demand-side and supply-side effects on the economy. How significant do you think such supply-side effects can be?
- How important for short-term economic growth do you think household spending is? What factors do you think will be important in affecting household spending in the months ahead?
- What factors do you think help to explain the 2.7% annual rate of decline reported in Q1 2011 in the household sector’s real disposable income?
- The real annual rate of decline in household spending reported in Q1 2011 was 0.5%. Would you have expected this percentage decline to have been the same as for real disposable income? Explain your answer.
The two biggest world exporters have signed trade deals worth $15bn (£9bn). The Chinese Premier and German Chancellor were targeting an increase in bilateral trade to £178bn over the next five years. Premier Wen has also offered support to some of the European countries struggling with their debt. Despite this offer of support, there is something in it for the Chinese economy. China’s foreign exchange reserves are at a record high, but about 25% are invested in euro-denominated assets, hence China has a very strong interest in preventing the collapse of the euro. Furthermore, it is also interested in diversifying its export market to reduce its reliance on US markets. This is particularly important given the growth in protectionism in the US economy. Mr. Innes-ker said:
“China’s dependence and exposure to the US dollar creates issues for its own economy to the extent that it’s a hostage to US monetary policy.”
China’s interest in the European economies may provide an opportunity for the UK economy, as it is a country with ideal investment conditions and is already one of China’s most important trading partners. David Cameron, in a meeting with Wen, has said he wants bilateral trade to increase to £62bn by 2015. The amount is nothing in comparison to the trade deal between China and Germany, but still a significant potential sum for the UK economy. The following articles consider the Chinese economy and its role in the global environment.
Self-interest in China’s helping hand Asia Times Online, Jian Junbo (30/6/11)
China and Germany ink $15bn trade deals as leaders meet BBC News (29/6/11)
Chinese leader’s visit to Germany ends with large trade deals The New York Times, Judy Dempsey (28/6/11)
China offers helping hand to Eurozone Guardian, Helen Pidd (28/6/11)
Rights, trade to dominate Germany-China talks Associated Press, Deborah Cole (28/6/11)
China promises EU ‘helping hand’ with debt crisis Reuters, James Pomfret and Stephen Brown (28/6/11)
We still don’t grasp how little we matter to China Independent, Hamish McRae (29/6/11)
Questions
- What are the benefits of trade?
- Why is it important for the Chinese economy to diversify its export market?
- What does it mean by the statement that China is hostage to US monetary policy?
- Why are China’s foreign exchange reserves at a record high?
- What are the reasons behind China’s interest in Europe? Is it more of a ‘helping hand’ or more to do with furthering China’s own ambitions?
- What might the trade deal between China and Germany mean for trade between China and other nations? Is the deal to the benefit of everyone?
Economic assessment of real-world issues relies heavily on data. It is the same with economic policy recommendations. Both public- and private-sector organisations gather data, which are then used for analysis, often presented in a report. These reports are then often used as the basis for policy, whether by the government, local authorities or the private sector. Sometimes the data are those collected by national statistical agencies, such as the Office for National Statistics (ONS) in the UK; sometimes they are collected by private agencies; sometimes by individual researchers.
Clearly the analysis and the suitability of any policy recommendations depend on the quality of the data. But how much can we rely on the data? A problem is that people have an interest in gathering and/or selecting data that support their opinions. As a result, the data used for analysis and policy recommendations may be unreliable and incomplete.
This is not to say that the data collected by reputable agencies such as the ONS are wrong. Rather, it is the selective use of them that can be highly misleading. Sometimes, however, the data that some agencies produce may indeed be unreliable, with too small or unrepresentative samples. If they rely on surveys, the survey questions may be poorly framed or lead the respondent into giving a particular answer.
Newspapers make use of data and reports all the time to make a particular case – a case in line with the newspaper’s political stance. The lesson for economic students is that we need to be alert all the time as to just how reliable data are; and to whether the conclusions drawn from them are correct.
The following two articles by Ben Goldacre, from the Guardian’s Bad Science series, look at the misuse of data. The first looks at the case of the Health Service; the second at the possibility of savings by local government in their procurement activities.
Articles
How far should we trust health reporting? Guardian, Ben Goldacre (17/6/11)
Misleading money-saving claims help no one Guardian, Ben Goldacre (24/6/11)
Report
Realising Savings through Procurement Optimisation Opera Solutions
Questions
- According to the first article above, how much newspaper reporting based on the use of data is unreliable?
- What are the reasons for the unreliability of newspaper reporting?
- For what reasons might the ONS and other reputable agencies periodically have to amend time series data?
- “Council incompetence ‘costs every household £452 a year'”. Critically examine this claim by the Daily Mail.
- Why may Opera Solutions be seen as not wholly independent in reporting the possibilities of cost savings by local government?
- In the absence of reliable data, can any economic policy conclusions be drawn from economic models? Explain.
Following a 38% increase in profit margins made by energy companies towards the end of 2010, Ofgem (the energy and gas regulator) began an investigation into the activities of energy companies. The review by Ofgem was aimed at determining whether or not consumers should be better protected from the powerful energy companies, many of whom had previously raised prices, forcing some consumers to pay an extra £138 per year. At the time, it was believed that Ofgem might request support from the Competition Commission, but it seems as though the big size energy companies have had a lucky escape. They will not be referred to the Competition Commission, even though critics, in particular First Utility – Britain’s largest independent energy supplier – suggest that Ofgem’s proposals are unlikely to be effective. It seems that the big six have shown sufficient co-operation with Ofgem.
A key reform that Ofgem hope to implement will try to reduce the power of this oligopoly by making it easier for new entrants to gain market share. One such proposal would see the big six auctioning off up to a fifth of the electricity they generate. As the owners of Britain’s power stations, new companies cannot buy gas and electricity on the open market and this reform aims to change that. However, there are concerns that this will be ineffective, as the big six may simply outbid the smaller companies or even just buy and sell electricity from each other, thereby keeping their dominant positions in the market. Although the big six have received constant criticism from all sides, the lack of government support for a Competition Commission inquiry may be related to the need for these companies to invest £200bn in Britain by 2020 to help create and build new energy sources, including wind farms and nuclear power. Without this investment, Britain’s energy supply could be in jeopardy. The following articles consider this energetic debate.
Articles
Ofgem may be blown away by the power of the ‘Big Six’ energy companies Telegraph, Rowena Mason (23/6/11)
Ofgem pledges to get tough with ‘big six’ energy companies Guardian, Miles Brignall (22/6/11)
Scottish power investigated over ‘misleading’ marketing campaign Independent, Sarah Arnott (23/6/11)
Ofgem and ‘Big Six’ need to put some energy into cleaning up their acts Telegraph, Richard Fletcher (23/6/11)
In search of a coherent energy policy Independent, David Prosser (23/6/11)
UK suppliers face tough power auction reforms Reuters (22/6/11)
Ofgem: ‘We are watching energy companies closely’ BBC News (22/6/11)
Data
Energy price statistics Department of Energy & Climate Change
Energy statistics publications Department of Energy & Climate Change
Questions
- What is the role of Ofgem? How does it relate to the Competition Commission?
- What factors have contributed to the investigation by Ofgem into the ‘big six’ energy companies?
- How much power does Ofgem actually have to implement reforms?
- What are the characteristics of an oligopoly? To what extent does the energy market fit into this market structure?
- What are the main barriers to entry that prevent new companies from competing with the ‘big six’? Are the reforms likely to help them?
- What other proposals have been suggested by parties other than Ofgem in bid to help new competitors and customers? Are any likely to be more effective than those proposed by Ofgem?
Approximately 1.6 million past and present female employees of Walmart have had their sex discrimination case dismissed by the US Supreme Court. This case began almost 10 years ago with claims by 5 female workers that they were paid less than their male counterparts and had been passed over for promotion. Despite statistical evidence suggesting a case of sexual discrimination, it was ruled that Walmart was not discriminating against women, as promotion decisions were made by individual managers, hence there was no common element between the plaintiffs. Justice Antonin Scalia said that a common element was ‘entirely absent here’.
Discrimination of any kind will have an impact on the demand curve for labour (or the marginal revenue product curve). As such, the equilibrium wage rate will also be affected: if a firm believes that women are less productive than their male counterparts, the MRP curve will shift inwards, pushing down their wage. The key to this case was that there were so many plaintiffs and so it was practically impossible to determine whether or not pay differentials and promotions were based on legitimate grounds. The following articles consider the case against Walmart.
Supreme Court decision in Walmart class-action claim brings praise, anger FoxNews (20/6/11)
Walmart wins class action ruling Financial Times, Barney Jopson (20/6/11)
Wal-Mart women denied discrimination class action BBC News (20/6/11)
Walmart sex discrimination class action rejected Guardian, Dominic Rushe (20/6/11)
Questions
- Why might a firm engage in discrimination?
- Use a diagram to illustrate the impact of discrimination against women by a firm on the marginal revenue product curve for women.
- Following discrimination against women and in favour of men, what happens to the men’s marginal product curve?
- Given your answer to the above 2 questions, what would you expect to happen to the equilibrium number of male and female workers and the male and female wage rate?
- Are there any adverse effects to a firm of engaging in discrimination of any kind?