| 年份 | 日本 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.0325107 |
| 2020 | 0.0325041 |
| 2019 | 0.0325666 |
| 2018 | 0.0326628 |
| 2017 | 0.032771 |
| 2016 | 0.0329252 |
| 2015 | 0.0330735 |
| 2014 | 0.033172 |
| 2013 | 0.0332536 |
| 2012 | 0.0332683 |
| 2011 | 0.0332778 |
| 2010 | 0.0334348 |
| 2009 | 0.0335346 |
| 2008 | 0.0336397 |
| 2007 | 0.0337966 |
| 2006 | 0.0339684 |
| 2005 | 0.034123 |
| 2004 | 0.0342749 |
| 2003 | 0.0344274 |
| 2002 | 0.0346738 |
| 2001 | 0.0349511 |
| 2000 | 0.035272 |
| 1999 | 0.03556 |
| 1998 | 0.0358782 |
| 1997 | 0.0362455 |
| 1996 | 0.0365944 |
| 1995 | 0.0369007 |
| 1994 | 0.037227 |
| 1993 | 0.0375313 |
| 1992 | 0.0378863 |
| 1991 | 0.0382369 |
| 1990 | 0.0386142 |
| 1989 | 0.0389375 |
| 1988 | 0.0392077 |
| 1987 | 0.0394367 |
| 1986 | 0.0396767 |
| 1985 | 0.0399712 |
| 1984 | 0.0402721 |
| 1983 | 0.0405928 |
| 1982 | 0.0409521 |
| 1981 | 0.0413136 |
| 1980 | 0.041727 |
| 1979 | 0.0421262 |
| 1978 | 0.0426235 |
| 1977 | 0.0431274 |
| 1976 | 0.0436356 |
| 1975 | 0.0443208 |
| 1974 | 0.045188 |
| 1973 | 0.0461332 |
| 1972 | 0.0471788 |
| 1971 | 0.0484877 |
| 1970 | 0.05025 |
| 1969 | 0.0504994 |
| 1968 | 0.0526675 |
| 1967 | 0.0538351 |
| 1966 | 0.0551638 |
| 1965 | 0.0559254 |
| 1964 | 0.0570674 |
| 1963 | 0.0580813 |
| 1962 | 0.0591996 |
| 1961 | 0.0601776 |
| 1960 | - |