| 年份 | 日本 |
|---|---|
| 2023 | - |
| 2022 | 51.1945 |
| 2021 | 50.9713 |
| 2020 | 50.5686 |
| 2019 | 49.9245 |
| 2018 | 49.1043 |
| 2017 | 48.1339 |
| 2016 | 46.9608 |
| 2015 | 45.5483 |
| 2014 | 43.7169 |
| 2013 | 41.5849 |
| 2012 | 39.5327 |
| 2011 | 38.1117 |
| 2010 | 37.3432 |
| 2009 | 36.4611 |
| 2008 | 35.2682 |
| 2007 | 33.9664 |
| 2006 | 32.6067 |
| 2005 | 31.3372 |
| 2004 | 30.3093 |
| 2003 | 29.4067 |
| 2002 | 28.4238 |
| 2001 | 27.337 |
| 2000 | 26.2521 |
| 1999 | 25.2563 |
| 1998 | 24.306 |
| 1997 | 23.351 |
| 1996 | 22.4143 |
| 1995 | 21.5465 |
| 1994 | 20.7396 |
| 1993 | 19.9624 |
| 1992 | 19.2153 |
| 1991 | 18.4767 |
| 1990 | 17.7833 |
| 1989 | 17.1773 |
| 1988 | 16.6745 |
| 1987 | 16.2352 |
| 1986 | 15.828 |
| 1985 | 15.428 |
| 1984 | 15.0736 |
| 1983 | 14.7927 |
| 1982 | 14.4981 |
| 1981 | 14.1301 |
| 1980 | 13.7546 |
| 1979 | 13.3872 |
| 1978 | 12.995 |
| 1977 | 12.6017 |
| 1976 | 12.2165 |
| 1975 | 11.8585 |
| 1974 | 11.5126 |
| 1973 | 11.1842 |
| 1972 | 10.858 |
| 1971 | 10.584 |
| 1970 | 10.3908 |
| 1969 | 10.2115 |
| 1968 | 10.0133 |
| 1967 | 9.78832 |
| 1966 | 9.56071 |
| 1965 | 9.3856 |
| 1964 | 9.28894 |
| 1963 | 9.2188 |
| 1962 | 9.16873 |
| 1961 | 9.09451 |
| 1960 | 8.96243 |