Ministry of Internal Affairs and Communications monitors the price of a cooking gas stove monthly.
The data below show the changes in the price indexes of stove between 1970 and 2014, if the price in 2010 is taken as 100.
In terms of stove, the ministry adjusts the price index by "Hedonic price index" when they calculates the index. The following graph shows how much money you need, in order to get the same performance (same quality) stove between 1970 and 2014.
| Year | Index (2010 = 100) | Price of a cooking gas stove (yen) |
| 1970 | 79.2 | 22675 |
| 1971 | 87.1 | 24937 |
| 1972 | 88.0 | 25194 |
| 1973 | 91.7 | 26254 |
| 1974 | 133.5 | 38221 |
| 1975 | 142.3 | 40740 |
| 1976 | 141.3 | 40454 |
| 1977 | 140.7 | 40282 |
| 1978 | 140.4 | 40197 |
| 1979 | 139.5 | 39939 |
| 1980 | 142.3 | 40740 |
| 1981 | 145.3 | 41599 |
| 1982 | 145.8 | 41743 |
| 1983 | 146.4 | 41914 |
| 1984 | 150.0 | 42945 |
| 1985 | 149.7 | 42859 |
| 1986 | 148.6 | 42544 |
| 1987 | 151.2 | 43289 |
| 1988 | 154.3 | 44176 |
| 1989 | 159.2 | 45579 |
| 1990 | 161.5 | 46237 |
| 1991 | 166.2 | 47583 |
| 1992 | 175.4 | 50217 |
| 1993 | 173.4 | 49644 |
| 1994 | 165.7 | 47440 |
| 1995 | 159.5 | 45665 |
| 1996 | 155.6 | 44548 |
| 1997 | 156.8 | 44892 |
| 1998 | 159.4 | 45636 |
| 1999 | 157.5 | 45092 |
| 2000 | 151.9 | 43489 |
| 2001 | 146.7 | 42000 |
| 2002 | 143.4 | 41055 |
| 2003 | 134.3 | 38450 |
| 2004 | 128.8 | 36875 |
| 2005 | 125.2 | 35845 |
| 2006 | 121.2 | 34700 |
| 2007 | 119.6 | 34241 |
| 2008 | 114.6 | 32810 |
| 2009 | 108.9 | 31178 |
| 2010 | 100.0 | 28630 |
| 2011 | 91.0 | 26053 |
| 2012 | 82.2 | 23534 |
| 2013 | 79.8 | 22847 |
| 2014 | 77.5 | 22188 |
The next graph shows the changes in the stove 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=000011288564
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