| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | 2.98908 |
| 2021 | 8.44847 |
| 2020 | 2.23864 |
| 2019 | 5.9505 |
| 2018 | 6.74977 |
| 2017 | 6.9472 |
| 2016 | 6.84876 |
| 2015 | 7.04133 |
| 2014 | 7.42576 |
| 2013 | 7.76615 |
| 2012 | 7.86374 |
| 2011 | 9.55083 |
| 2010 | 10.6359 |
| 2009 | 9.39873 |
| 2008 | 9.65068 |
| 2007 | 14.2309 |
| 2006 | 12.721 |
| 2005 | 11.3946 |
| 2004 | 10.1136 |
| 2003 | 10.038 |
| 2002 | 9.13363 |
| 2001 | 8.33573 |
| 2000 | 8.49009 |
| 1999 | 7.66165 |
| 1998 | 7.84595 |
| 1997 | 9.23678 |
| 1996 | 9.92256 |
| 1995 | 10.954 |
| 1994 | 13.0368 |
| 1993 | 13.8837 |
| 1992 | 14.2245 |
| 1991 | 9.26279 |
| 1990 | 3.92025 |
| 1989 | 4.20633 |
| 1988 | 11.2226 |
| 1987 | 11.6574 |
| 1986 | 8.94996 |
| 1985 | 13.4307 |
| 1984 | 15.1915 |
| 1983 | 10.7702 |
| 1982 | 9.01711 |
| 1981 | 5.11276 |
| 1980 | 7.83415 |
| 1979 | 7.59132 |
| 1978 | 11.326 |
| 1977 | 7.57 |
| 1976 | -1.57 |
| 1975 | 8.72 |
| 1974 | 2.31 |
| 1973 | 7.76 |
| 1972 | 3.81 |
| 1971 | 7.06 |
| 1970 | 19.3 |
| 1969 | 16.94 |
| 1968 | -4.1 |
| 1967 | -5.77 |
| 1966 | 10.65 |
| 1965 | 16.95 |
| 1964 | 18.18 |
| 1963 | 10.3 |
| 1962 | -5.58 |
| 1961 | -27.27 |
| 1960 | - |