| 年份 | 日本 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 12.7819 |
| 2020 | 12.845 |
| 2019 | 12.9355 |
| 2018 | 13.0206 |
| 2017 | 13.1084 |
| 2016 | 13.2044 |
| 2015 | 13.2949 |
| 2014 | 13.3608 |
| 2013 | 13.4211 |
| 2012 | 13.4568 |
| 2011 | 13.4952 |
| 2010 | 13.5885 |
| 2009 | 13.6477 |
| 2008 | 13.7152 |
| 2007 | 13.7909 |
| 2006 | 13.8639 |
| 2005 | 13.9369 |
| 2004 | 14.0192 |
| 2003 | 14.1015 |
| 2002 | 14.1975 |
| 2001 | 14.3018 |
| 2000 | 14.4252 |
| 1999 | 14.5981 |
| 1998 | 14.749 |
| 1997 | 14.9163 |
| 1996 | 15.0892 |
| 1995 | 15.2551 |
| 1994 | 15.4279 |
| 1993 | 15.5952 |
| 1992 | 15.7323 |
| 1991 | 15.864 |
| 1990 | 15.9956 |
| 1989 | 16.1218 |
| 1988 | 16.2507 |
| 1987 | 16.3412 |
| 1986 | 16.4107 |
| 1985 | 16.5003 |
| 1984 | 16.5698 |
| 1983 | 16.5729 |
| 1982 | 16.6412 |
| 1981 | 16.7058 |
| 1980 | 16.795 |
| 1979 | 16.8559 |
| 1978 | 16.9432 |
| 1977 | 17.0306 |
| 1976 | 17.116 |
| 1975 | 17.2524 |
| 1974 | 17.395 |
| 1973 | 17.5177 |
| 1972 | 17.6514 |
| 1971 | 17.8429 |
| 1970 | 18.2602 |
| 1969 | 18.1402 |
| 1968 | 18.5356 |
| 1967 | 18.6474 |
| 1966 | 18.8056 |
| 1965 | 19.1001 |
| 1964 | 19.171 |
| 1963 | 19.1437 |
| 1962 | 19.4164 |
| 1961 | 19.3891 |
| 1960 | - |