Document Count,Publication Year
40,"1990"
40,"1991"
50,"1992"
56,"1993"
99,"1994"
150,"1995"
237,"1996"
385,"1997"
591,"1998"
760,"1999"
1006,"2000"
1411,"2001"
1704,"2002"
2081,"2003"
2507,"2004"
3234,"2005"
4150,"2006"
5217,"2007"
6266,"2008"
7925,"2009"
9762,"2010"
12055,"2011"
15036,"2012"
18628,"2013"
21508,"2014"
25045,"2015"
28269,"2016"
31910,"2017"
35885,"2018"
43856,"2019"
60754,"2020"
71755,"2021"