| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.0770781 |
| 2020 | 0.0772178 |
| 2019 | 0.0775439 |
| 2018 | 0.0788545 |
| 2017 | 0.0802404 |
| 2016 | 0.08175 |
| 2015 | 0.0832482 |
| 2014 | 0.0842674 |
| 2013 | 0.0853668 |
| 2012 | 0.0866405 |
| 2011 | 0.0882356 |
| 2010 | 0.0898048 |
| 2009 | 0.0911802 |
| 2008 | 0.0914885 |
| 2007 | 0.0917735 |
| 2006 | 0.0922969 |
| 2005 | 0.0925499 |
| 2004 | 0.0929077 |
| 2003 | 0.0933107 |
| 2002 | 0.0937423 |
| 2001 | 0.0940629 |
| 2000 | 0.0942783 |
| 1999 | 0.0950239 |
| 1998 | 0.09585 |
| 1997 | 0.096774 |
| 1996 | 0.0980157 |
| 1995 | 0.0992485 |
| 1994 | 0.101272 |
| 1993 | 0.102933 |
| 1992 | 0.105496 |
| 1991 | 0.108513 |
| 1990 | 0.109057 |
| 1989 | 0.109239 |
| 1988 | 0.109746 |
| 1987 | 0.110882 |
| 1986 | 0.112956 |
| 1985 | 0.114268 |
| 1984 | 0.109951 |
| 1983 | 0.104856 |
| 1982 | 0.10083 |
| 1981 | 0.0973855 |
| 1980 | 0.0980142 |
| 1979 | 0.0993798 |
| 1978 | 0.100851 |
| 1977 | 0.102407 |
| 1976 | 0.104013 |
| 1975 | 0.105839 |
| 1974 | 0.109357 |
| 1973 | 0.111028 |
| 1972 | 0.114138 |
| 1971 | 0.117524 |
| 1970 | 0.121322 |
| 1969 | 0.125323 |
| 1968 | 0.129424 |
| 1967 | 0.133484 |
| 1966 | 0.137612 |
| 1965 | 0.142131 |
| 1964 | 0.145914 |
| 1963 | 0.149633 |
| 1962 | 0.153657 |
| 1961 | 0.155377 |
| 1960 | - |