| 年份 | 中国  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | - | 
| 2021 | 0.607569 | 
| 2020 | 0.359558 | 
| 2019 | 0.448117 | 
| 2018 | 0.582602 | 
| 2017 | 0.537717 | 
| 2016 | 0.41314 | 
| 2015 | 0.40463 | 
| 2014 | 0.79513 | 
| 2013 | 1.08228 | 
| 2012 | 1.77837 | 
| 2011 | 3.53117 | 
| 2010 | 2.74101 | 
| 2009 | 1.70995 | 
| 2008 | 4.95293 | 
| 2007 | 2.1021 | 
| 2006 | 1.84347 | 
| 2005 | 1.84459 | 
| 2004 | 2.48181 | 
| 2003 | 0.220007 | 
| 2002 | 0.263543 | 
| 2001 | 0.801896 | 
| 2000 | 0.146387 | 
| 1999 | 0.071187 | 
| 1998 | 0.14994 | 
| 1997 | 0.0847831 | 
| 1996 | 0.128661 | 
| 1995 | 0.455736 | 
| 1994 | 0.0649779 | 
| 1993 | 0.142656 | 
| 1992 | 0.699209 | 
| 1991 | 1.34805 | 
| 1990 | 1.70524 | 
| 1989 | 1.47842 | 
| 1988 | 0.914569 | 
| 1987 | 0.196742 | 
| 1986 | 1.58664 | 
| 1985 | 3.04748 | 
| 1984 | 2.98496 | 
| 1983 | 4.38935 | 
| 1982 | 8.7255 | 
| 1981 | 7.95334 | 
| 1980 | 4.5503 | 
| 1979 | 2.69651 | 
| 1978 | 3.33591 | 
| 1977 | 3.08113 | 
| 1976 | 3.03115 | 
| 1975 | 2.69281 | 
| 1974 | 0.711009 | 
| 1973 | 0.0770742 | 
| 1972 | 0.0691536 | 
| 1971 | 0.0745389 | 
| 1970 | - | 
| 1969 | - | 
| 1968 | - | 
| 1967 | - | 
| 1966 | - | 
| 1965 | - | 
| 1964 | - | 
| 1963 | - | 
| 1962 | - | 
| 1961 | - | 
| 1960 | - |