分面浏览：发表日期 |
| 当前检索式 | ((ALL：human activity)) |
| 限定条件 | 无 |
| 2024 17 | 2023 42 | 2022 67 |
| 2021 168 | 2020 267 | 2019 348 |
| 2018 497 | 2017 492 | 2016 583 |
| 2015 481 | 2014 497 | 2013 490 |
| 2012 446 | 2011 295 | 2010 444 |
| 2009 268 | 2008 268 | 2007 225 |
| 2006 224 | 2005 181 | 2004 147 |
| 2003 100 | 2002 71 | 2001 61 |
| 2000 31 | 1999 37 | 1998 20 |
| 1997 11 | 1996 16 | 1995 11 |
| 1994 14 | 1993 7 | 1992 8 |
| 1991 6 | 1990 3 | 1988 1 |
| 1987 1 | 1986 4 | 1985 2 |
| 1984 1 | 1983 2 | 1981 1 |
