Ministry of Internal Affairs and Communications monitors the price of eating out at a restaurant monthly.
The data below show the changes in the price indexes of eating ramen noodle out at a noodle restaurant between 1970 and 2014, if the price in 2010 is taken as 100.
| Year | Index (2010 = 100) | Price of a serving of ramen noodle (yen) |
| 1970 | 17.8 | 97 |
| 1971 | 20.0 | 109 |
| 1972 | 22.1 | 121 |
| 1973 | 26.3 | 144 |
| 1974 | 34.6 | 189 |
| 1975 | 39.8 | 217 |
| 1976 | 43.8 | 239 |
| 1977 | 48.0 | 262 |
| 1978 | 50.8 | 277 |
| 1979 | 53.0 | 289 |
| 1980 | 58.0 | 317 |
| 1981 | 61.3 | 335 |
| 1982 | 63.5 | 347 |
| 1983 | 66.0 | 360 |
| 1984 | 68.4 | 373 |
| 1985 | 69.7 | 381 |
| 1986 | 70.8 | 387 |
| 1987 | 71.8 | 392 |
| 1988 | 72.5 | 396 |
| 1989 | 75.8 | 414 |
| 1990 | 78.0 | 426 |
| 1991 | 81.2 | 443 |
| 1992 | 83.9 | 458 |
| 1993 | 85.8 | 468 |
| 1994 | 87.1 | 476 |
| 1995 | 87.9 | 480 |
| 1996 | 88.5 | 483 |
| 1997 | 91.7 | 501 |
| 1998 | 93.7 | 512 |
| 1999 | 94.0 | 513 |
| 2000 | 94.5 | 516 |
| 2001 | 94.5 | 516 |
| 2002 | 94.5 | 516 |
| 2003 | 94.7 | 517 |
| 2004 | 95.6 | 522 |
| 2005 | 96.1 | 525 |
| 2006 | 96.3 | 526 |
| 2007 | 96.5 | 527 |
| 2008 | 98.7 | 539 |
| 2009 | 100.0 | 546 |
| 2010 | 100.0 | 546 |
| 2011 | 100.0 | 546 |
| 2012 | 100.2 | 547 |
| 2013 | 100.3 | 548 |
| 2014 | 103.5 | 565 |
The next graph shows the changes in the price of a bowl of ramen noodle 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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