| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 4.8 |
| 2020 | 5.1 |
| 2019 | 5.6 |
| 2018 | 6 |
| 2017 | 6.5 |
| 2016 | 7.1 |
| 2015 | 7.7 |
| 2014 | 8.3 |
| 2013 | 9.1 |
| 2012 | 9.8 |
| 2011 | 10.7 |
| 2010 | 11.6 |
| 2009 | 12.6 |
| 2008 | 13.8 |
| 2007 | 15.1 |
| 2006 | 16.5 |
| 2005 | 18.2 |
| 2004 | 20 |
| 2003 | 22.1 |
| 2002 | 24.2 |
| 2001 | 26.2 |
| 2000 | 28.2 |
| 1999 | 30.1 |
| 1998 | 31.8 |
| 1997 | 33.4 |
| 1996 | 34.9 |
| 1995 | 36.3 |
| 1994 | 37.6 |
| 1993 | 38.8 |
| 1992 | 39.7 |
| 1991 | 40.2 |
| 1990 | 40.4 |
| 1989 | 40.4 |
| 1988 | 40.2 |
| 1987 | 39.9 |
| 1986 | 39.7 |
| 1985 | 39.6 |
| 1984 | 39.8 |
| 1983 | 40.4 |
| 1982 | 41.3 |
| 1981 | 42.6 |
| 1980 | 44.3 |
| 1979 | 46.3 |
| 1978 | 48.8 |
| 1977 | 51.7 |
| 1976 | 54.8 |
| 1975 | 58.2 |
| 1974 | 61.6 |
| 1973 | 65.1 |
| 1972 | 68.5 |
| 1971 | 72 |
| 1970 | 75.3 |
| 1969 | 78.9 |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |