year | # of sources | % |
---|---|---|
2007 | 63 | 2.74 |
2008 | 325 | 14.11 |
2009 | 170 | 7.38 |
2010 | 217 | 9.42 |
2013 | 876 | 38.04 |
2014 | 101 | 4.39 |
2015 | 196 | 8.51 |
2016 | 150 | 6.51 |
2017 | 106 | 4.60 |
month | # of sources | % |
---|---|---|
2008-01 | 129 | 5.60 |
2008-06 | 86 | 3.73 |
2010-02 | 145 | 6.30 |
2013-04 | 816 | 35.43 |
2015-05 | 103 | 4.47 |
2016-09 | 94 | 4.08 |