| 年份 | 美国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 128.741 |
| 2020 | 131.152 |
| 2019 | 128.841 |
| 2018 | 129.155 |
| 2017 | 127.717 |
| 2016 | 127.815 |
| 2015 | 129.026 |
| 2014 | 127.975 |
| 2013 | 135.555 |
| 2012 | 134.898 |
| 2011 | 130.228 |
| 2010 | 124.7 |
| 2009 | 118.932 |
| 2008 | 99.9746 |
| 2007 | 120.382 |
| 2006 | 126.651 |
| 2005 | 115.916 |
| 2004 | 119.231 |
| 2003 | 124.19 |
| 2002 | 111.882 |
| 2001 | 110.13 |
| 2000 | 108.751 |
| 1999 | 111.86 |
| 1998 | 112.341 |
| 1997 | 113.863 |
| 1996 | 112.872 |
| 1995 | 108.773 |
| 1994 | 108.058 |
| 1993 | 108.886 |
| 1992 | 102.803 |
| 1991 | 100.797 |
| 1990 | 100.441 |
| 1989 | 98.8002 |
| 1988 | 95.6284 |
| 1987 | 94.8043 |
| 1986 | 93.1497 |
| 1985 | 98.5598 |
| 1984 | 105.162 |
| 1983 | 98.8041 |
| 1982 | 93.2429 |
| 1981 | 106.998 |
| 1980 | 112.831 |
| 1979 | 110.179 |
| 1978 | 104.885 |
| 1977 | 102.812 |
| 1976 | 105.195 |
| 1975 | 95.6487 |
| 1974 | 88.7038 |
| 1973 | 91.5438 |
| 1972 | 85.7231 |
| 1971 | 82.8754 |
| 1970 | 80.6353 |
| 1969 | 76.1348 |
| 1968 | 76.8568 |
| 1967 | 76.2348 |
| 1966 | 69.2435 |
| 1965 | 61.0382 |
| 1964 | 55.0295 |
| 1963 | 51.0648 |
| 1962 | 46.7255 |
| 1961 | 41.3343 |
| 1960 | - |