| 年份 | 美国 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | - |
| 2020 | - |
| 2019 | - |
| 2018 | - |
| 2017 | 5.11844 |
| 2016 | 5.65673 |
| 2015 | 4.99298 |
| 2014 | 4.83562 |
| 2013 | 5.33042 |
| 2012 | 4.86057 |
| 2011 | 5.65067 |
| 2010 | 5.45159 |
| 2009 | - |
| 2008 | - |
| 2007 | - |
| 2006 | - |
| 2005 | 4.7874 |
| 2004 | - |
| 2003 | - |
| 2002 | - |
| 2001 | - |
| 2000 | - |
| 1999 | - |
| 1998 | - |
| 1997 | - |
| 1996 | 5.27661 |
| 1995 | 4.84304 |
| 1994 | 4.60756 |
| 1993 | 4.95616 |
| 1992 | - |
| 1991 | 4.42152 |
| 1990 | 5.01799 |
| 1989 | - |
| 1988 | - |
| 1987 | 3.8643 |
| 1986 | 4.6599 |
| 1985 | - |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |