Ministry of Internal Affairs and Communications monitors the price of women's winter skirt monthly.
The data below show the changes in the price indexes of women's winter skirt between 1970 and 2015, if the price in 2015 is taken as 100.
| Year | Index (2015 = 100) | Price of women's winter skirt (yen) |
| 1970 | 20.1 | 1,915 |
| 1971 | 22.2 | 2,115 |
| 1972 | 22.6 | 2,153 |
| 1973 | 31.7 | 3,019 |
| 1974 | 40.3 | 3,839 |
| 1975 | 42.6 | 4,058 |
| 1976 | 49.1 | 4,677 |
| 1977 | 52.9 | 5,039 |
| 1978 | 53.9 | 5,134 |
| 1979 | 58.8 | 5,601 |
| 1980 | 61.2 | 5,829 |
| 1981 | 62.6 | 5,963 |
| 1982 | 65.3 | 6,220 |
| 1983 | 66.0 | 6,287 |
| 1984 | 69.3 | 6,601 |
| 1985 | 73.8 | 7,029 |
| 1986 | 76.4 | 7,277 |
| 1987 | 76.7 | 7,306 |
| 1988 | 78.1 | 7,439 |
| 1989 | 81.6 | 7,772 |
| 1990 | 84.3 | 8,030 |
| 1991 | 86.6 | 8,249 |
| 1992 | 88.6 | 8,439 |
| 1993 | 89.5 | 8,525 |
| 1994 | 86.5 | 8,239 |
| 1995 | 84.7 | 8,068 |
| 1996 | 84.4 | 8,039 |
| 1997 | 85.8 | 8,172 |
| 1998 | 88.3 | 8,411 |
| 1999 | 89.2 | 8,496 |
| 2000 | 88.8 | 8,458 |
| 2001 | 86.6 | 8,249 |
| 2002 | 86.8 | 8,268 |
| 2003 | 86.4 | 8,230 |
| 2004 | 87.5 | 8,334 |
| 2005 | 91.7 | 8,734 |
| 2006 | 92.5 | 8,811 |
| 2007 | 95.9 | 9,134 |
| 2008 | 97.2 | 9,258 |
| 2009 | 96.5 | 9,192 |
| 2010 | 95.8 | 9,125 |
| 2011 | 95.2 | 9,068 |
| 2012 | 94.9 | 9,039 |
| 2013 | 96.3 | 9,173 |
| 2014 | 99.0 | 9,430 |
| 2015 | 100.0 | 9,525 |
Source is Statistics Bureau. 消費者物価指数 (CPI) 結果
www.stat.go.jp/data/cpi/historic.htm
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