China ‘exaggerated’ GDP data by 2 percentage points for at least nine years, new study says 6park.com
Mainland has overestimated its nominal and real growth rates by about 2 full percentage points on average between 2008 to 2016Calculations suggest that the current nominal size of the economy is about 18 per cent lower than the official level of US$13.4 trillion at the end of 2018 6park.com
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Sidney Leng   6park.com
Published: 8:18pm, 7 Mar, 2019
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The paper, “A Forensic Examination of China’s National Account”, was submitted to the “Brookings Papers on Economic Activity”, a journal published by the US-based Brookings Institute. Photo: EPA 6park.com
China has overestimated its nominal and real growth rates by about 2 full percentage points on average between 2008 to 2016, with the miscalculation increasing each year, according to a new study published on Thursday. 6park.com
The results indicate that the actual size of China’s economy at the end of 2018 was well below the government’s official estimate. 6park.com
It also raises questions not only about the quality of economic data from the world’s second largest economy, but also the willingness of the government to take the steps necessary to accurately report information. 6park.com
Using the study’s findings and applying them to government figures starting with the level of nominal gross domestic product (GDP) at the end of 2007 and the growth rate for 2008, calculations by the South China Morning Post show that the current nominal size of the Chinese economy is about 18 per cent lower than the official level of 90 trillion yuan (US$13.4 trillion) at the end of 2018. 6park.com
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The calculation assumes that the government’s official 2017 and 2018 nominal growth rates are overestimated by 2 percentage points, as suggested by the study. 6park.com
Overestimates of growth in 2007 and previous years would further reduce the current size of the Chinese economy. 6park.com
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SCMP calculations show the adjusted nominal GDP level in China is about US$11.5 trillion using current exchange rates, still more than twice the size of Japan’s economy at US$5.16 trillion, but well below the economy of the United States at US$20 trillion. 6park.com
The 
paper,
 “A Forensic Examination of China’s National Account”, was submitted to the “Brookings Papers on Economic Activity”, a journal published by the US-based think tank Brookings Institute twice a year on macroeconomic issues that are influencing the public policy debate. It will be formally presented in Washington on Thursday. 6park.com
“Our estimates suggest that the extent by which local governments exaggerate local GDP accelerated after 2008, but the magnitude of the adjustment by the NBS did not change in tandem,” the authors said. 6park.com
The study focuses primarily on nominal, non-inflation adjusted growth. 6park.com
The paper comes at a sensitive time for Chinese policymakers, who are battling a slowing economy due to their campaign to reduce debt and risky lending as well as the effect of the trade war with the United States. The inflation-adjusted growth rate of 6.6 per cent last year was the slowest since 1990. 6park.com
On Tuesday, 
the government
 announced that it had lowered its growth target for 2019 to a range of 6 to 6.5 per cent, down from “about 6.5 per cent” last year due to the multiple headwinds the economy is facing. The government also announced new tax cuts and additional government spending to help stabilise growth. 6park.com
The paper’s four authors – Chen Wei, Chen Xilu and Michael Song from the Chinese University of Hong Kong and Chang-Tai Hsieh from the University of Chicago – used a mix of economic indicators that are less likely to have been manipulated by authorities to prove that the National Bureau of Statistics (NBS) have not done enough to correct the errors in the data collected from provincial governments over the past decade. 6park.com
Our estimates suggest that the extent by which local governments exaggerate local GDP accelerated after 2008, but the magnitude of the adjustment by the NBS did not change in tandem.Report authors
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It has long been believed that local Chinese officials inflate figures reflecting their economic performance, which is closely tied to their opportunity for promotion. Since 2003, the NBS has produced a national gross domestic product (GDP) figure that is lower than aggregate provincial data after examining other data such as the census and land sales. 6park.com
Local statistics bureaus generally overstate industrial output as a portion of overall production as well as the size of investment within overall expenditures, the two different approaches to calculating GDP, according to the paper. The methods of data collection are often the cause, for example, calculations of investment spending have been based purely on government reports on specific projects rather than on the financial statements of the investing firms involved. 6park.com
One method that the authors used to probe the accuracy of the NBS’s adjustments was comparing the growth of official GDP with the growth of revenue from value-added tax (VAT), which taxes the value added to a product at each stage of production. 6park.com
Local governments have fewer incentives to manipulate VAT revenue, since a large portion of it is eventually transferred to the central government, therefore overstating VAT would only increase fiscal revenue losses. 6park.com
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Premier Li Keqiang confirmed China had lowered its growth target for 2019 to a range of 6 to 6.5 per cent at the National People’s Congress on Tuesday. Photo: 6park.com
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The authors found that since 2008, the official growth rate for industry and other sectors exceeded their corresponding VAT growth rate, with the gap widening over the past decade, indicating that the government was overstating official GDP. 6park.com
In other words, the overstatement of official growth has worsened since 2008 and NBS’s corrections have been increasingly inadequate to offset bottom-up data exaggerations. 6park.com
A similar conclusion was drawn when the authors examined and adjusted the official GDP growth data with a set of alternative indicators, including satellite images showing lights at night, national tax revenue, electricity consumption, railway cargo traffic, as well as imports and exports that are less likely to be over-reported, although these proxies did not fully capture the growing importance of the service sector in the economy in recent years. 6park.com
Among all 31 Chinese provinces, Guangdong, Zhejiang, Beijing, and Shanghai appeared to have the highest data quality, based on the economists’ own calculations that were privately confirmed by NBS officials. The worst performing provinces included Tianjin, Liaoning and Inner Mongolia, all of which have been exposed as having exaggerated economic data in recent years. 6park.com
The economists suggested that the problem is that much of the underlying data needed to project GDP is outside the NBS’s control, even though the agency has been trying hard to collect local data itself. At the same time, the NBS is also in a weak political position to confront local political leaders to demand better data collection. 6park.com
Although the NBS adjusts downwards local statistics, it does not report the adjusted local statistics, perhaps out of a desire to not confront powerful local leaders.Report authors
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“Although the NBS adjusts downwards local statistics, it does not report the adjusted local statistics, perhaps out of a desire to not confront powerful local leaders,” the authors said. 6park.com
Since September, the NBS has named and shamed local governments on its website for manipulating data, but it remains to be seen if local governments fall in line. 6park.com
In a post in January, the NBS said it had passed 14 cases of data falsification on to local governments before February 2018 but that it had not been updated even though local officials are required by law to punish those responsible for manipulating data within six months after receiving a notice of a violation. 6park.com
The NBS’s ability to fix China’s GDP data problem is bound by its limited political power, the authors indicated. 6park.com
“There are three problems with China’s GDP. One is that it doesn’t necessarily measure the right thing. Two is statistical bias in the way data is collected. Three is really a macro policy problem by the government which should write down all the bad debt,” said Michael Pettis, professor of finance at Peking University. 6park.com
“The NBS is only trying to fix the second problem.” 6park.com