| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | 2.99483 |
| 2021 | 2.90504 |
| 2020 | 2.81621 |
| 2019 | 2.74173 |
| 2018 | 2.67247 |
| 2017 | 2.59825 |
| 2016 | 2.5203 |
| 2015 | 2.43169 |
| 2014 | 2.33835 |
| 2013 | 2.2435 |
| 2012 | 2.15392 |
| 2011 | 2.07743 |
| 2010 | 2.00027 |
| 2009 | 1.9207 |
| 2008 | 1.84155 |
| 2007 | 1.76322 |
| 2006 | 1.69399 |
| 2005 | 1.62195 |
| 2004 | 1.54023 |
| 2003 | 1.46272 |
| 2002 | 1.39525 |
| 2001 | 1.33122 |
| 2000 | 1.27187 |
| 1999 | 1.22303 |
| 1998 | 1.18046 |
| 1997 | 1.13954 |
| 1996 | 1.09987 |
| 1995 | 1.05987 |
| 1994 | 1.01921 |
| 1993 | 0.98018 |
| 1992 | 0.950937 |
| 1991 | 0.934027 |
| 1990 | 0.918423 |
| 1989 | 0.894346 |
| 1988 | 0.864982 |
| 1987 | 0.838288 |
| 1986 | 0.811097 |
| 1985 | 0.778161 |
| 1984 | 0.741884 |
| 1983 | 0.702808 |
| 1982 | 0.664536 |
| 1981 | 0.629122 |
| 1980 | 0.595717 |
| 1979 | 0.568509 |
| 1978 | 0.544928 |
| 1977 | 0.521301 |
| 1976 | 0.499728 |
| 1975 | 0.478756 |
| 1974 | 0.457982 |
| 1973 | 0.438941 |
| 1972 | 0.423544 |
| 1971 | 0.415576 |
| 1970 | 0.413857 |
| 1969 | 0.412656 |
| 1968 | 0.40964 |
| 1967 | 0.406846 |
| 1966 | 0.407575 |
| 1965 | 0.412931 |
| 1964 | 0.422052 |
| 1963 | 0.432391 |
| 1962 | 0.439295 |
| 1961 | 0.445092 |
| 1960 | 0.457959 |