| 年份 | 科技期刊文章(篇) |
|---|---|
| 2020 | 455855.57 |
| 2019 | 438020.45 |
| 2018 | 435033.88 |
| 2017 | 430198.17 |
| 2016 | 428476.45 |
| 2015 | 428203.78 |
| 2014 | 428140.59 |
| 2013 | 426596.66 |
| 2012 | 425131.48 |
| 2011 | 423222.43 |
| 2010 | 409511.63 |
| 2009 | 399757.26 |
| 2008 | 395157.82 |
| 2007 | 392348.65 |
| 2006 | 389728.34 |
| 2005 | 385577.39 |