| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | 1.95224 |
| 2021 | 1.85558 |
| 2020 | 1.7916 |
| 2019 | 1.74299 |
| 2018 | 1.70969 |
| 2017 | 1.69486 |
| 2016 | 1.67786 |
| 2015 | 1.6569 |
| 2014 | 1.64724 |
| 2013 | 1.63991 |
| 2012 | 1.61715 |
| 2011 | 1.57981 |
| 2010 | 1.53855 |
| 2009 | 1.49465 |
| 2008 | 1.44269 |
| 2007 | 1.39377 |
| 2006 | 1.35074 |
| 2005 | 1.30652 |
| 2004 | 1.26674 |
| 2003 | 1.22494 |
| 2002 | 1.17657 |
| 2001 | 1.13598 |
| 2000 | 1.09519 |
| 1999 | 1.04322 |
| 1998 | 0.991073 |
| 1997 | 0.948594 |
| 1996 | 0.910849 |
| 1995 | 0.873913 |
| 1994 | 0.84538 |
| 1993 | 0.827437 |
| 1992 | 0.807139 |
| 1991 | 0.781307 |
| 1990 | 0.756622 |
| 1989 | 0.730241 |
| 1988 | 0.701184 |
| 1987 | 0.677939 |
| 1986 | 0.662082 |
| 1985 | 0.646682 |
| 1984 | 0.627348 |
| 1983 | 0.608546 |
| 1982 | 0.594415 |
| 1981 | 0.580117 |
| 1980 | 0.561844 |
| 1979 | 0.539452 |
| 1978 | 0.513651 |
| 1977 | 0.488707 |
| 1976 | 0.466672 |
| 1975 | 0.448765 |
| 1974 | 0.43833 |
| 1973 | 0.431439 |
| 1972 | 0.423684 |
| 1971 | 0.416236 |
| 1970 | 0.409321 |
| 1969 | 0.404917 |
| 1968 | 0.403306 |
| 1967 | 0.402482 |
| 1966 | 0.406161 |
| 1965 | 0.415331 |
| 1964 | 0.422238 |
| 1963 | 0.427179 |
| 1962 | 0.434389 |
| 1961 | 0.446107 |
| 1960 | 0.469828 |