| 年份 | 中国  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | - | 
| 2021 | 1.70756 | 
| 2020 | 0.863775 | 
| 2019 | 1.26691 | 
| 2018 | 1.42518 | 
| 2017 | 1.31424 | 
| 2016 | 1.05247 | 
| 2015 | 1.17477 | 
| 2014 | 2.31013 | 
| 2013 | 2.98307 | 
| 2012 | 4.08849 | 
| 2011 | 7.6852 | 
| 2010 | 6.28673 | 
| 2009 | 3.91782 | 
| 2008 | 9.64841 | 
| 2007 | 6.32788 | 
| 2006 | 5.5212 | 
| 2005 | 5.10277 | 
| 2004 | 4.72488 | 
| 2003 | 2.01791 | 
| 2002 | 1.9563 | 
| 2001 | 2.59238 | 
| 2000 | 2.69774 | 
| 1999 | 1.84533 | 
| 1998 | 1.71539 | 
| 1997 | 2.39156 | 
| 1996 | 3.0048 | 
| 1995 | 3.267 | 
| 1994 | 3.28088 | 
| 1993 | 4.44907 | 
| 1992 | 5.33847 | 
| 1991 | 6.08172 | 
| 1990 | 8.6387 | 
| 1989 | 7.05998 | 
| 1988 | 6.28565 | 
| 1987 | 6.49281 | 
| 1986 | 5.75921 | 
| 1985 | 9.78978 | 
| 1984 | 10.3999 | 
| 1983 | 12.6162 | 
| 1982 | 16.7509 | 
| 1981 | 19.4674 | 
| 1980 | 19.7416 | 
| 1979 | 17.0999 | 
| 1978 | 11.2105 | 
| 1977 | 9.60235 | 
| 1976 | 9.22371 | 
| 1975 | 7.33042 | 
| 1974 | 5.00071 | 
| 1973 | 1.79558 | 
| 1972 | 0.895123 | 
| 1971 | 0.773897 | 
| 1970 | 0.840417 | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |