year | # of sources | % |
---|---|---|
2007 | 42158 | 89.72 |
2012 | 4831 | 10.28 |
month | # of sources | % |
---|---|---|
2007-04 | 1853 | 3.94 |
2007-05 | 4278 | 9.10 |
2007-06 | 4774 | 10.16 |
2007-07 | 3139 | 6.68 |
2007-08 | 5941 | 12.64 |
2007-09 | 4986 | 10.61 |
2007-10 | 5513 | 11.73 |
2007-11 | 5876 | 12.51 |
2007-12 | 4957 | 10.55 |
2012-08 | 4831 | 10.28 |