年份 | 美国 |
---|---|
2023 | - |
2022 | 1.55149 |
2021 | 5.77955 |
2020 | -3.70095 |
2019 | 1.82967 |
2018 | 2.40487 |
2017 | 1.59714 |
2016 | 0.933375 |
2015 | 1.953 |
2014 | 1.54038 |
2013 | 1.13869 |
2012 | 1.5331 |
2011 | 0.814519 |
2010 | 1.86029 |
2009 | -3.45002 |
2008 | -0.820368 |
2007 | 1.04493 |
2006 | 1.79649 |
2005 | 2.53378 |
2004 | 2.89585 |
2003 | 1.91648 |
2002 | 0.756774 |
2001 | -0.0399197 |
2000 | 2.92544 |
1999 | 3.59799 |
1998 | 3.27051 |
1997 | 3.19721 |
1996 | 2.57226 |
1995 | 1.46872 |
1994 | 2.76088 |
1993 | 1.40571 |
1992 | 2.09661 |
1991 | -1.4342 |
1990 | 0.741486 |
1989 | 2.69817 |
1988 | 3.23542 |
1987 | 2.53862 |
1986 | 2.51089 |
1985 | 3.25066 |
1984 | 6.31217 |
1983 | 3.63198 |
1982 | -2.73457 |
1981 | 1.53632 |
1980 | -1.2093 |
1979 | 2.03389 |
1978 | 4.42298 |
1977 | 3.57715 |
1976 | 4.39146 |
1975 | -1.18458 |
1974 | -1.44513 |
1973 | 4.64216 |
1972 | 4.1381 |
1971 | 1.9956 |
1970 | -1.43845 |
1969 | 2.09737 |
1968 | 3.75882 |
1967 | 1.38995 |
1966 | 5.27711 |
1965 | 5.0781 |
1964 | 4.34055 |
1963 | 2.90827 |
1962 | 4.48067 |
1961 | 0.618121 |
1960 | - |