| 年份 | 中国  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 4.53492 | 
| 2021 | 5.02727 | 
| 2020 | 5.43938 | 
| 2019 | 5.7474 | 
| 2018 | 5.98061 | 
| 2017 | 6.11318 | 
| 2016 | 6.14519 | 
| 2015 | 6.16675 | 
| 2014 | 6.18493 | 
| 2013 | 6.1734 | 
| 2012 | 6.11926 | 
| 2011 | 6.05029 | 
| 2010 | 6.00229 | 
| 2009 | 5.9307 | 
| 2008 | 5.84851 | 
| 2007 | 5.78681 | 
| 2006 | 5.76295 | 
| 2005 | 5.79858 | 
| 2004 | 5.85885 | 
| 2003 | 5.9222 | 
| 2002 | 6.02239 | 
| 2001 | 6.15714 | 
| 2000 | 6.30687 | 
| 1999 | 6.50032 | 
| 1998 | 6.76205 | 
| 1997 | 7.06551 | 
| 1996 | 7.43488 | 
| 1995 | 8.03568 | 
| 1994 | 8.77572 | 
| 1993 | 9.42015 | 
| 1992 | 10.0407 | 
| 1991 | 10.577 | 
| 1990 | 10.7376 | 
| 1989 | 10.612 | 
| 1988 | 10.4489 | 
| 1987 | 10.3277 | 
| 1986 | 10.2468 | 
| 1985 | 10.1728 | 
| 1984 | 10.1453 | 
| 1983 | 10.1306 | 
| 1982 | 9.99566 | 
| 1981 | 9.88685 | 
| 1980 | 10.0147 | 
| 1979 | 10.3878 | 
| 1978 | 11.0642 | 
| 1977 | 11.9379 | 
| 1976 | 12.8591 | 
| 1975 | 13.8299 | 
| 1974 | 14.721 | 
| 1973 | 15.4399 | 
| 1972 | 15.8863 | 
| 1971 | 16.1346 | 
| 1970 | 16.3947 | 
| 1969 | 16.6544 | 
| 1968 | 17.0934 | 
| 1967 | 17.5352 | 
| 1966 | 17.1407 | 
| 1965 | 16.0205 | 
| 1964 | 14.8672 | 
| 1963 | 13.7085 | 
| 1962 | 13.1061 | 
| 1961 | 13.6873 | 
| 1960 | 14.9925 |