分面浏览：发表日期 |
| 当前检索式 | ((ALL：美国)) |
| 限定条件 | 无 |
| 2022 2 | 2021 9 | 2020 7 |
| 2019 105 | 2018 284 | 2017 445 |
| 2016 611 | 2015 712 | 2014 779 |
| 2013 718 | 2012 762 | 2011 714 |
| 2010 754 | 2009 632 | 2008 601 |
| 2007 502 | 2006 559 | 2005 482 |
| 2004 424 | 2003 366 | 2002 307 |
| 2001 207 | 2000 261 | 1999 148 |
| 1998 121 | 1997 82 | 1996 64 |
| 1995 57 | 1994 44 | 1993 32 |
| 1992 26 | 1991 27 | 1990 20 |
| 1989 26 | 1988 25 | 1987 19 |
| 1986 20 | 1985 10 | 1984 16 |
| 1983 15 | 1982 14 | 1981 10 |
| 1980 5 | 1979 4 | 1978 1 |
| 1977 1 | 1965 1 | 1964 1 |
| 1958 2 |
