| 年份 | 科技期刊文章(篇) |
|---|---|
| 2020 | 669744.3 |
| 2019 | 610458.55 |
| 2018 | 531109.87 |
| 2017 | 468045.33 |
| 2016 | 436078.81 |
| 2015 | 405811.76 |
| 2014 | 385178.3 |
| 2013 | 356356.43 |
| 2012 | 328127.24 |
| 2011 | 323135.69 |
| 2010 | 308768.95 |
| 2009 | 285495.89 |
| 2008 | 247545.45 |
| 2007 | 213167.91 |
| 2006 | 192392.77 |
| 2005 | 165403.81 |