| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | 0.337349 |
| 2019 | 0.326961 |
| 2018 | 0.347169 |
| 2017 | 0.346101 |
| 2016 | 0.345281 |
| 2015 | 0.364156 |
| 2014 | 0.383687 |
| 2013 | 0.38419 |
| 2012 | 0.384241 |
| 2011 | 0.378377 |
| 2010 | 0.380462 |
| 2009 | 0.379707 |
| 2008 | 0.371597 |
| 2007 | 0.371757 |
| 2006 | 0.46559 |
| 2005 | 0.488061 |
| 2004 | 0.49262 |
| 2003 | 0.496509 |
| 2002 | 0.504302 |
| 2001 | 0.515311 |
| 2000 | 0.534157 |
| 1999 | 0.528817 |
| 1998 | 0.535894 |
| 1997 | 0.518362 |
| 1996 | 0.59833 |
| 1995 | 0.606341 |
| 1994 | 0.436111 |
| 1993 | 0.456827 |
| 1992 | 0.482128 |
| 1991 | 0.494406 |
| 1990 | 0.547616 |
| 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 | - |