Japanese government monitors the price of instant curry mix every month.
The following data show the changes in the price indexes of instant curry mix between 1970 and 2014, if the price in 2010 is taken as 100.
| Year | Index (2010 = 100) | Price of a box of instant curry mix (yen) |
| 1970 | 37.3 | 83 |
| 1971 | 41.0 | 91 |
| 1972 | 40.9 | 91 |
| 1973 | 42.2 | 94 |
| 1974 | 62.3 | 139 |
| 1975 | 72.4 | 161 |
| 1976 | 72.9 | 163 |
| 1977 | 77.1 | 172 |
| 1978 | 80.3 | 179 |
| 1979 | 80.5 | 180 |
| 1980 | 84.7 | 189 |
| 1981 | 93.0 | 207 |
| 1982 | 93.6 | 209 |
| 1983 | 93.4 | 208 |
| 1984 | 93.8 | 209 |
| 1985 | 93.5 | 209 |
| 1986 | 93.7 | 209 |
| 1987 | 93.9 | 209 |
| 1988 | 93.8 | 209 |
| 1989 | 95.7 | 213 |
| 1990 | 100.1 | 223 |
| 1991 | 107.2 | 239 |
| 1992 | 107.7 | 240 |
| 1993 | 107.1 | 239 |
| 1994 | 106.4 | 237 |
| 1995 | 104.9 | 234 |
| 1996 | 104.2 | 232 |
| 1997 | 106.4 | 237 |
| 1998 | 106.3 | 237 |
| 1999 | 106.0 | 236 |
| 2000 | 104.2 | 232 |
| 2001 | 102.3 | 228 |
| 2002 | 100.3 | 224 |
| 2003 | 97.8 | 218 |
| 2004 | 96.2 | 215 |
| 2005 | 95.7 | 213 |
| 2006 | 93.7 | 209 |
| 2007 | 93.9 | 209 |
| 2008 | 101.6 | 227 |
| 2009 | 99.3 | 221 |
| 2010 | 100.0 | 223 |
| 2011 | 100.2 | 223 |
| 2012 | 96.2 | 215 |
| 2013 | 92.9 | 207 |
| 2014 | 98.5 | 220 |
The next data show the changes in 500g instant curry mix price from 1970 to 2014.
Source is Statistics Bureau. 消費者物価指数 (CPI) 結果
www.stat.go.jp/data/cpi/historic.htm
www.e-stat.go.jp/SG1/estat/Csvdl.do?sinfid=000011288549
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