| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | 16.0074 |
| 2021 | 15.8081 |
| 2020 | 17.1301 |
| 2019 | 16.7705 |
| 2018 | 16.5358 |
| 2017 | 16.3249 |
| 2016 | 16.3638 |
| 2015 | 16.2179 |
| 2014 | 15.817 |
| 2013 | 15.884 |
| 2012 | 15.7561 |
| 2011 | 15.2389 |
| 2010 | 14.587 |
| 2009 | 14.753 |
| 2008 | 14.4856 |
| 2007 | 14.6268 |
| 2006 | 14.8205 |
| 2005 | 14.7977 |
| 2004 | 14.6253 |
| 2003 | 15.3142 |
| 2002 | 16.0704 |
| 2001 | 16.4134 |
| 2000 | 16.8384 |
| 1999 | 16.3657 |
| 1998 | 14.946 |
| 1997 | 13.7526 |
| 1996 | 13.1982 |
| 1995 | 13.3081 |
| 1994 | 14.0912 |
| 1993 | 14.3527 |
| 1992 | 14.4407 |
| 1991 | 14.0016 |
| 1990 | 13.6565 |
| 1989 | 13.1883 |
| 1988 | 12.4979 |
| 1987 | 13.1086 |
| 1986 | 13.852 |
| 1985 | 14.2139 |
| 1984 | 15.0731 |
| 1983 | 13.9557 |
| 1982 | 13.2082 |
| 1981 | 13.1826 |
| 1980 | 13.75 |
| 1979 | 13.7794 |
| 1978 | 12.8991 |
| 1977 | 12.5393 |
| 1976 | 12.6718 |
| 1975 | 11.704 |
| 1974 | 12.0489 |
| 1973 | 11.4792 |
| 1972 | 12.0099 |
| 1971 | 11.8443 |
| 1970 | 10.9618 |
| 1969 | 11.7392 |
| 1968 | 11.1267 |
| 1967 | 10.906 |
| 1966 | 12.0892 |
| 1965 | 11.7873 |
| 1964 | 12.6845 |
| 1963 | 13.5349 |
| 1962 | 12.6889 |
| 1961 | 14.2984 |
| 1960 | 12.4408 |