Why price inflation in developed countries is systematically underestimated

Kitov, Ivan (2012): Why price inflation in developed countries is systematically underestimated.

Abstract

There is an extensive historical dataset on real GDP per capita prepared by Angus Maddison. This dataset covers the period since 1870 with continuous annual estimates in developed countries. All time series for individual economies have a clear structural break between 1940 and 1950. The behavior before 1940 and after 1950 can be accurately (R2 from 0.7 to 0.99) approximated by linear time trends. The corresponding slopes of regressions lines before and after the break differ by a factor of 4 (Switzerland) to 19 (Spain). We have extrapolated the early trends into the second interval and obtained much lower estimates of real GDP per capita in 2011: from 2.4 (Switzerland) to 5.0 (Japan) times smaller than the current levels. When the current linear trends are extrapolated into the past, they intercept the zero line between 1908 (Switzerland) and 1944 (Japan). There is likely an internal conflict between the estimating procedures before 1940 and after 1950. A reasonable explanation of the discrepancy is that the GDP deflator in developed countries has been highly underestimated since 1950. In the USA, the GDP deflator is underestimated by a factor of 1.4. This is exactly the ratio of the interest rate controlled by the Federal Reserve and the rate of inflation. Hence, the Federal Reserve actually retains its interest rate at the level of true price inflation when corrected for the bias in the GDP deflator.

• Item Type: MPRA Paper
• Language: English
• Keywords: real GDP, price inflation, interest rate, central bank, developed countries
• Subjects: E - Macroeconomics and Monetary Economics > E4 - Money and Interest Rates > E43 - Interest Rates: Determination, Term Structure, and Effects; O - Economic Development, Innovation, Technological Change, and Growth > O4 - Economic Growth and Aggregate Productivity > O47 - Empirical Studies of Economic Growth ; Aggregate Productivity ; Cross-Country Output Convergence; E - Macroeconomics and Monetary Economics > E3 - Prices, Business Fluctuations, and Cycles > E31 - Price Level ; Inflation ; Deflation; E - Macroeconomics and Monetary Economics > E0 - General > E01 - Measurement and Data on National Income and Product Accounts and Wealth ; Environmental Accounts

References

Beechy, M. and P. Ä. Österholm (2008). Revisiting the uncertain unit root in GDP and CPI: testing for non-linear trend reversion, Economics Letters, 100, pp. 221-223.

Ben-David, D., R. L. Lumsdaine, and D. H. Papell (2003). Unit roots, postwar slowdowns and long-run growth: Evidence from two structural breaks, Empirical Economics, 28, 303.319.

Bureau of Economic Analysis (2011). Concepts and Methods of the U.S. National Income and Product Accounts, http://bea.gov/national/pdf/NIPAchapters1-9.pdf

Bureau of Economic Analysis (2012). Current-dollar and “real” GDP, Table retrieved April 20, 2012 from http://bea.gov/national/index.htm

Caporale, G. M. and L.A. Gil-Alana (2009). Long Memory in US Real Output per Capita, DIW Berlin, May 2009.

Chen, S.-W. (2008). Are 19 Developed Countries' Real Per Capita GDP levels Non-stationary? A Revisit, Economic Bulletin, vol. 3, No. 2 pp. 1-11

Conference Board (2012). Total Economy Database, Table retrieved April 25, 2012 from http://www.conference-board.org/data/economydatabase/

Congressional Budget Office (2012). The Budget and Economic Outlook: Fiscal Years 2012 to 2022, http://www.cbo.gov/sites/default/files/cbofiles/attachments/01-31-2012_Outlook.pdf

Cuestas, J. C. and D. Garratt (2008). Is real GDP per capita a stationary process? Smooth transitions, nonlinear trends and unit root testing, Nottingham Trent University Discussion Papers, No. 2008/12

Kitov, I. (2009). The Evolution of Real GDP Per Capita in Developed Countries, Journal of Applied Economic Sciences, Spiru Haret University, Faculty of Financial Management and Accounting Craiova, vol. IV(1(8)_ Summ), pp. 221-234.

Kitov, I. and O. Kitov (2012). Real GDP per capita in developed countries since 1870. MPRA paper 39021, http://mpra.ub.uni-muenchen.de/39021/.

Michelacci, C. and P. Zaffaroni (2000). (Fractional) Beta convergence, Journal of Monetary Economics 45, pp. 129-153.

Maddison, A. (2004). Contours of the World Economy and the Art of Macro-measurement 1500-2001, Ruggles Lecture, IARIW 28th General Conference, Cork, Ireland August 2004.

Mayoral, L. (2006). Further evidence on the statistical properties of real GNP, Oxford Bulletin of Economics and Statistics 68, pp. 901-920.

Narayan, P.K. (2006). Are G7 real per capita GDP levels non-stationary, 1870.2001? Japan and the World Economy, doi:10.1016/j-japwor.2006.08.001

Nelson, C. R. and C. I. Plosser (1982). Trends and random walks in macroeconomic time series: Some evidence and implications, Journal of Monetary Economics, 10, 139.162.

Vougas, D. V. (2007). Is the trend in post-WW II US real gdp uncertain or non-linear?, Economics Letters, vol. 94, pp. 348-355.