| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | 2.24897 |
| 2021 | 4.55233 |
| 2020 | 0.492494 |
| 2019 | 1.2867 |
| 2018 | 3.49975 |
| 2017 | 4.23268 |
| 2016 | 1.40735 |
| 2015 | -0.00294409 |
| 2014 | 1.03106 |
| 2013 | 2.16337 |
| 2012 | 2.33122 |
| 2011 | 8.07568 |
| 2010 | 6.88138 |
| 2009 | -0.209533 |
| 2008 | 7.79535 |
| 2007 | 7.74969 |
| 2006 | 3.92655 |
| 2005 | 3.90374 |
| 2004 | 6.95199 |
| 2003 | 2.60318 |
| 2002 | 0.602099 |
| 2001 | 2.04705 |
| 2000 | 2.06279 |
| 1999 | -1.26306 |
| 1998 | -0.900252 |
| 1997 | 1.61657 |
| 1996 | 6.50673 |
| 1995 | 13.6657 |
| 1994 | 20.617 |
| 1993 | 15.1859 |
| 1992 | 8.19032 |
| 1991 | 6.71454 |
| 1990 | 5.71122 |
| 1989 | 8.60246 |
| 1988 | 12.1077 |
| 1987 | 5.08252 |
| 1986 | 4.66902 |
| 1985 | 10.2094 |
| 1984 | 4.94416 |
| 1983 | 1.1568 |
| 1982 | -0.140355 |
| 1981 | 2.35787 |
| 1980 | 3.75178 |
| 1979 | 3.60005 |
| 1978 | 1.67514 |
| 1977 | 1.09377 |
| 1976 | -0.106286 |
| 1975 | -1.13118 |
| 1974 | 0.277736 |
| 1973 | 0.208465 |
| 1972 | 0.0741856 |
| 1971 | 0.665937 |
| 1970 | -2.61457 |
| 1969 | -3.79253 |
| 1968 | 1.36358 |
| 1967 | 0.813497 |
| 1966 | -1.56207 |
| 1965 | 0.869781 |
| 1964 | -0.362038 |
| 1963 | -2.62161 |
| 1962 | -0.114965 |
| 1961 | 15.254 |
| 1960 | - |