| 年份 | 中国  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | - | 
| 2021 | 0.510049 | 
| 2020 | 0.168349 | 
| 2019 | 0.272313 | 
| 2018 | 0.178922 | 
| 2017 | 0.23589 | 
| 2016 | 0.185155 | 
| 2015 | 0.203345 | 
| 2014 | 0.358822 | 
| 2013 | 0.604284 | 
| 2012 | 0.783715 | 
| 2011 | 2.33286 | 
| 2010 | 2.02001 | 
| 2009 | 0.996363 | 
| 2008 | 2.36221 | 
| 2007 | 2.15746 | 
| 2006 | 1.17113 | 
| 2005 | 0.719382 | 
| 2004 | 0.263034 | 
| 2003 | 0.137302 | 
| 2002 | 0.127807 | 
| 2001 | 0.124862 | 
| 2000 | 0.143065 | 
| 1999 | 0.337011 | 
| 1998 | 0.438149 | 
| 1997 | 0.234161 | 
| 1996 | 0.238792 | 
| 1995 | 0.317944 | 
| 1994 | 0.444569 | 
| 1993 | 0.523713 | 
| 1992 | 0.689419 | 
| 1991 | 0.742893 | 
| 1990 | 0.376865 | 
| 1989 | 0.395103 | 
| 1988 | 1.11137 | 
| 1987 | 0.258694 | 
| 1986 | 0.175061 | 
| 1985 | 0.254013 | 
| 1984 | 0.287607 | 
| 1983 | 0.407939 | 
| 1982 | 0.465098 | 
| 1981 | 0.532478 | 
| 1980 | 0.404616 | 
| 1979 | 0.354068 | 
| 1978 | 0.280545 | 
| 1977 | 0.423541 | 
| 1976 | 0.42132 | 
| 1975 | 0.220501 | 
| 1974 | 0.319417 | 
| 1973 | 0.17516 | 
| 1972 | 0.111912 | 
| 1971 | 0.142432 | 
| 1970 | 0.190312 | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |