| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | -0.0130995 |
| 2021 | 0.0892522 |
| 2020 | 0.238041 |
| 2019 | 0.354741 |
| 2018 | 0.467672 |
| 2017 | 0.605245 |
| 2016 | 0.573051 |
| 2015 | 0.581456 |
| 2014 | 0.630326 |
| 2013 | 0.666073 |
| 2012 | 0.678345 |
| 2011 | 0.546458 |
| 2010 | 0.48296 |
| 2009 | 0.497381 |
| 2008 | 0.512387 |
| 2007 | 0.522272 |
| 2006 | 0.558374 |
| 2005 | 0.588125 |
| 2004 | 0.593933 |
| 2003 | 0.622861 |
| 2002 | 0.67 |
| 2001 | 0.726381 |
| 2000 | 0.787957 |
| 1999 | 0.865851 |
| 1998 | 0.95955 |
| 1997 | 1.02345 |
| 1996 | 1.04814 |
| 1995 | 1.08651 |
| 1994 | 1.13026 |
| 1993 | 1.14962 |
| 1992 | 1.22554 |
| 1991 | 1.36443 |
| 1990 | 1.4673 |
| 1989 | 1.53317 |
| 1988 | 1.61007 |
| 1987 | 1.60361 |
| 1986 | 1.4874 |
| 1985 | 1.3617 |
| 1984 | 1.31207 |
| 1983 | 1.44495 |
| 1982 | 1.47267 |
| 1981 | 1.28095 |
| 1980 | 1.25422 |
| 1979 | 1.33393 |
| 1978 | 1.33818 |
| 1977 | 1.36278 |
| 1976 | 1.54734 |
| 1975 | 1.76639 |
| 1974 | 2.06595 |
| 1973 | 2.2834 |
| 1972 | 2.45736 |
| 1971 | 2.74692 |
| 1970 | 2.76168 |
| 1969 | 2.74 |
| 1968 | 2.6109 |
| 1967 | 2.5707 |
| 1966 | 2.78733 |
| 1965 | 2.38137 |
| 1964 | 2.32068 |
| 1963 | 2.45765 |
| 1962 | 0.820456 |
| 1961 | -1.01553 |
| 1960 | - |