| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | 17.4668 |
| 2021 | 17.358 |
| 2020 | 16.1682 |
| 2019 | 17.4801 |
| 2018 | 18.4537 |
| 2017 | 17.9401 |
| 2016 | 17.31 |
| 2015 | 18.1101 |
| 2014 | 21.3952 |
| 2013 | 22.1451 |
| 2012 | 22.775 |
| 2011 | 24.1727 |
| 2010 | 23.5317 |
| 2009 | 20.435 |
| 2008 | 25.01 |
| 2007 | 26.7586 |
| 2006 | 28.4439 |
| 2005 | 28.378 |
| 2004 | 28.4442 |
| 2003 | 24.8232 |
| 2002 | 20.1027 |
| 2001 | 18.2152 |
| 2000 | 18.5173 |
| 1999 | 15.3617 |
| 1998 | 14.0822 |
| 1997 | 15.0399 |
| 1996 | 15.8914 |
| 1995 | 16.3244 |
| 1994 | 17.2331 |
| 1993 | 13.9025 |
| 1992 | 12.542 |
| 1991 | 10.63 |
| 1990 | 9.74787 |
| 1989 | 10.1074 |
| 1988 | 12.0106 |
| 1987 | 10.328 |
| 1986 | 11.1784 |
| 1985 | 12.3622 |
| 1984 | 7.87633 |
| 1983 | 6.36107 |
| 1982 | 6.265 |
| 1981 | 7.4496 |
| 1980 | 6.51324 |
| 1979 | 5.92373 |
| 1978 | 5.09419 |
| 1977 | 4.08615 |
| 1976 | 4.32644 |
| 1975 | 4.84948 |
| 1974 | 5.40369 |
| 1973 | 3.7588 |
| 1972 | 2.50744 |
| 1971 | 2.13277 |
| 1970 | 2.46085 |
| 1969 | 2.40546 |
| 1968 | 2.91841 |
| 1967 | 2.97626 |
| 1966 | 3.23503 |
| 1965 | 3.18916 |
| 1964 | 2.86414 |
| 1963 | 2.85989 |
| 1962 | 2.90828 |
| 1961 | 3.48941 |
| 1960 | 4.42827 |