|||
United States | United Kingdom | Japan | China | |
---|---|---|---|---|
1996 | 319,933 | 80,276 | 82,491 | 27,520 |
1997 | 319,204 | 82,393 | 86,475 | 30,710 |
1998 | 316,443 | 84,547 | 87,138 | 36,547 |
1999 | 312,666 | 84,902 | 89,828 | 38,254 |
2000 | 316,720 | 88,820 | 91,367 | 44,641 |
2001 | 312,202 | 84,057 | 89,014 | 57,793 |
2002 | 318,981 | 86,275 | 89,391 | 57,246 |
2003 | 339,107 | 95,651 | 96,514 | 69,725 |
2004 | 321,834 | 99,500 | 98,273 | 102,392 |
2005 | 345,688 | 108,621 | 106,252 | 152,735 |
2006 | 367,886 | 116,144 | 108,143 | 179,846 |
2007 | 382,082 | 120,884 | 104,703 | 203,333 |
2008 | 386,039 | 122,546 | 105,399 | 236,701 |
2009 | 415,057 | 127,127 | 106,293 | 280,568 |
Archiver|手机版|科学网 ( 京ICP备07017567号-12 )
GMT+8, 2024-8-8 14:51
Powered by ScienceNet.cn
Copyright © 2007- 中国科学报社