Query parameters
Query: -
Results count: 2318151
Too many results found. Only first 25 000 records are displayed in charts. To get more data click 'Data export'.
Chart type selection:
Publication years:
Publication year |
Count |
1997 |
48 |
1998 |
119 |
1999 |
175 |
2000 |
225 |
2001 |
211 |
2002 |
203 |
2003 |
520 |
2004 |
5515 |
2005 |
6694 |
2006 |
299 |
2007 |
833 |
2008 |
7362 |
2009 |
2796 |