| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 23.6315 |
| 2020 | 23.4313 |
| 2019 | 23.2311 |
| 2018 | 23.0309 |
| 2017 | 22.8307 |
| 2016 | 22.6305 |
| 2015 | 22.3998 |
| 2014 | 22.1935 |
| 2013 | 21.9872 |
| 2012 | 21.7809 |
| 2011 | 21.5746 |
| 2010 | 21.3683 |
| 2009 | 21.1168 |
| 2008 | 20.8654 |
| 2007 | 20.6139 |
| 2006 | 20.3624 |
| 2005 | 20.1109 |
| 2004 | 19.8594 |
| 2003 | 19.6079 |
| 2002 | 19.3565 |
| 2001 | 19.105 |
| 2000 | 18.8535 |
| 1999 | 18.6419 |
| 1998 | 18.4304 |
| 1997 | 18.2188 |
| 1996 | 18.0073 |
| 1995 | 17.7957 |
| 1994 | 17.5842 |
| 1993 | 17.3726 |
| 1992 | 17.1611 |
| 1991 | 16.9495 |
| 1990 | 16.738 |
| 1989 | - |
| 1988 | - |
| 1987 | - |
| 1986 | - |
| 1985 | - |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |