Referential JPY based on CPI (2013e)

[PEREZGONZALEZ Jose D (2013). Referential JPY based on CPI (2013e)3. Knowledge (ISSN 2324-1624), 2014, pages 12-14.] [DOI] [Printer friendly]

# Referential JPY

Referential Japanese yen (rJPY, r¥) is the real value of the Japanese yen (JPY, ¥) back in 2010, which is used here as referential currency for better understanding the value of money overtime. The referential yen is based on the average annual CPI (Consumer Price Index) for Japan (Rate Inflation, 20132). It is calculated by updating the nominal value of the yen with the appropriate multiplier. The formula for transforming JPY into rJPY follows, while Table 1 provides the correct multiplier (an inflator/deflator multiplier) for the formula.

Formula
rJPY = nominal JPY + (nominal JPY * multiplier)

Table 1. CPI for Japan and rJPY multiplier
Year CPI A.Avg Base 2010 multiplier
1970 32.7 100.0 2.0581
1971 34.8 100.0 1.8736
1972 36.4 100.0 1.7473
1973 40.7 100.0 1.4570
1974 50.1 100.0 0.9960
1975 56.0 100.0 0.7857
1976 61.3 100.0 0.6313
1977 66.2 100.0 0.5106
1978 69.0 100.0 0.4493
1979 71.6 100.0 0.3966
1980 77.2 100.0 0.2953
1981 81.0 100.0 0.2346
1982 83.2 100.0 0.2019
1983 84.7 100.0 0.1806
1984 86.7 100.0 0.1534
1985 88.4 100.0 0.1312
1986 89.0 100.0 0.1236
1987 89.1 100.0 0.1223
1988 89.7 100.0 0.1148
1989 91.7 100.0 0.0905
1990 94.5 100.0 0.0582
1991 97.6 100.0 0.0246
1992 99.3 100.0 0.0070
1993 100.5 100.0 -0.0050
1994 101.2 100.0 -0.0119
1995 101.1 100.0 -0.0109
1996 101.2 100.0 -0.0119
1997 103.0 100.0 -0.0291
1998 103.7 100.0 -0.0357
1999 103.4 100.0 -0.0329
2000 102.7 100.0 -0.0263
2001 101.9 100.0 -0.0186
2002 101.0 100.0 -0.0099
2003 100.7 100.0 -0.0070
2004 100.7 100.0 -0.0070
2005 100.4 100.0 -0.0040
2006 100.7 100.0 -0.0070
2007 100.7 100.0 -0.0070
2008 102.1 100.0 -0.0206
2009 100.7 100.0 -0.0070
2010 100.0 100.0 0.0000
2011 99.7 100.0 0.0030
2012 99.7 100.0 0.0030
2013 100.0 100.0 0.0000
2014* 103.0 100.0 -0.0291
2015* 106.1 100.0 -0.0574
2016* 109.3 100.0 -0.0849
2017* 112.6 100.0 -0.1115
2018* 115.9 100.0 -0.1374
2019* 119.4 100.0 -0.1625
2020* 123.0 100.0 -0.1869
2021* 126.7 100.0 -0.2106
(*Assuming a 3% accumulated inflation rate.)

## Author

Jose D PEREZGONZALEZ (2014). Massey University, Turitea Campus, Private Bag 11-222, Palmerston North 4442, New Zealand. ().

# Want to know more?

MeasuringWorth - Japanese calculator
A handy website to learn about different inflation indexes and calculate the value of Japanese money according to those indexes, although it stops at year 2009.
WikiofScience - Referential currency (list of topics)
This WikiofScience page provides a list of topics related to referential currencies.

page revision: 23, last edited: 18 Dec 2014 02:35