| 年份 | 中国 |
|---|---|
| 2023 | - |
| 2022 | 3.21019 |
| 2021 | 2.58596 |
| 2020 | 2.41798 |
| 2019 | 0.929889 |
| 2018 | 0.658423 |
| 2017 | 1.75214 |
| 2016 | 2.27435 |
| 2015 | 3.24399 |
| 2014 | 2.11491 |
| 2013 | 2.45413 |
| 2012 | 2.71752 |
| 2011 | 2.39547 |
| 2010 | 3.65359 |
| 2009 | 4.31484 |
| 2008 | 7.59271 |
| 2007 | 8.67623 |
| 2006 | 7.59117 |
| 2005 | 5.45182 |
| 2004 | 2.61715 |
| 2003 | 2.15753 |
| 2002 | 2.54209 |
| 2001 | 2.09693 |
| 2000 | 2.37638 |
| 1999 | 2.80079 |
| 1998 | 4.2599 |
| 1997 | 4.45331 |
| 1996 | 2.03185 |
| 1995 | 1.62808 |
| 1994 | 1.30368 |
| 1993 | -1.90466 |
| 1992 | 1.01351 |
| 1991 | 2.80641 |
| 1990 | 2.70373 |
| 1989 | -1.08002 |
| 1988 | -0.995722 |
| 1987 | 0.0889665 |
| 1986 | -2.45912 |
| 1985 | -4.03472 |
| 1984 | 0.0172123 |
| 1983 | 0.843645 |
| 1982 | 1.69479 |
| 1981 | -0.002026 |
| 1980 | -0.601624 |
| 1979 | -0.760891 |
| 1978 | -0.538233 |
| 1977 | 0.212308 |
| 1976 | 0.184033 |
| 1975 | -0.144761 |
| 1974 | -0.473883 |
| 1973 | 0.482548 |
| 1972 | 0.74048 |
| 1971 | 0.655297 |
| 1970 | 0.0307058 |
| 1969 | 0.642136 |
| 1968 | 0.384152 |
| 1967 | 0.30097 |
| 1966 | 0.259438 |
| 1965 | 0.449827 |
| 1964 | 0.904823 |
| 1963 | 1.14556 |
| 1962 | 1.14438 |
| 1961 | 0.381401 |
| 1960 | -0.122441 |