year | # of sources | % |
---|---|---|
2007 | 2646 | 96.82 |
2012 | 87 | 3.18 |
month | # of sources | % |
---|---|---|
2007-03 | 81 | 2.96 |
2007-04 | 199 | 7.28 |
2007-05 | 257 | 9.40 |
2007-06 | 284 | 10.39 |
2007-07 | 218 | 7.98 |
2007-08 | 381 | 13.94 |
2007-09 | 303 | 11.09 |
2007-10 | 356 | 13.03 |
2007-11 | 274 | 10.03 |
2007-12 | 293 | 10.72 |
2012-10 | 87 | 3.18 |