| 年份 | 日本 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.721536 |
| 2020 | 0.735254 |
| 2019 | 0.748971 |
| 2018 | 0.762689 |
| 2017 | 0.776406 |
| 2016 | 0.78738 |
| 2015 | 0.798354 |
| 2014 | 0.812071 |
| 2013 | 0.823045 |
| 2012 | 0.831276 |
| 2011 | 0.84225 |
| 2010 | 0.853224 |
| 2009 | 0.864198 |
| 2008 | 0.877915 |
| 2007 | 0.888889 |
| 2006 | 0.899863 |
| 2005 | 0.910837 |
| 2004 | 0.919067 |
| 2003 | 0.930041 |
| 2002 | 0.943759 |
| 2001 | 0.957476 |
| 2000 | 0.97668 |
| 1999 | 0.995885 |
| 1998 | 1.01509 |
| 1997 | 1.04252 |
| 1996 | 1.07545 |
| 1995 | 1.11903 |
| 1994 | 1.16018 |
| 1993 | 1.20406 |
| 1992 | 1.23697 |
| 1991 | 1.27263 |
| 1990 | 1.3028 |
| 1989 | 1.33571 |
| 1988 | 1.40154 |
| 1987 | 1.44268 |
| 1986 | 1.47519 |
| 1985 | 1.50576 |
| 1984 | 1.53551 |
| 1983 | 1.55106 |
| 1982 | 1.56745 |
| 1981 | 1.5857 |
| 1980 | 1.60251 |
| 1979 | 1.61572 |
| 1978 | 1.62664 |
| 1977 | 1.64847 |
| 1976 | 1.67804 |
| 1975 | 1.71351 |
| 1974 | 1.73759 |
| 1973 | 1.72395 |
| 1972 | 1.71031 |
| 1971 | 1.67985 |
| 1970 | 1.63621 |
| 1969 | 1.60894 |
| 1968 | 1.57349 |
| 1967 | 1.52986 |
| 1966 | 1.48077 |
| 1965 | 1.43442 |
| 1964 | 1.36351 |
| 1963 | 1.22716 |
| 1962 | 1.09081 |
| 1961 | 0.954459 |
| 1960 | - |