| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2017 | 11 | 9 | 2 | ||||||||||
| 2016 | 79 | 4 | 7 | 13 | 10 | 9 | 7 | 3 | 4 | 7 | 6 | 4 | 5 |
| 2015 | 52 | 8 | 7 | 9 | 8 | 15 | 5 | ||||||
| 2014 | 94 | 9 | 7 | 7 | 5 | 10 | 6 | 3 | 14 | 11 | 10 | 12 | |
| 2013 | 90 | 5 | 3 | 9 | 4 | 8 | 9 | 5 | 8 | 11 | 12 | 9 | 7 |
| 2012 | 65 | 2 | 1 | 6 | 6 | 7 | 5 | 2 | 5 | 10 | 4 | 8 | 9 |
| 2011 | 76 | 7 | 8 | 5 | 5 | 7 | 4 | 6 | 9 | 6 | 7 | 6 | 6 |
| 2010 | 64 | 4 | 7 | 6 | 6 | 7 | 7 | 6 | 10 | 5 | 6 | ||
| 2009 | 81 | 7 | 5 | 6 | 4 | 6 | 6 | 9 | 5 | 8 | 7 | 7 | 11 |
| 2008 | 76 | 6 | 6 | 6 | 5 | 7 | 9 | 8 | 5 | 7 | 11 | 6 | |
| 2007 | 70 | 4 | 6 | 6 | 5 | 8 | 5 | 6 | 5 | 9 | 5 | 5 | 6 |
| 2006 | 87 | 2 | 8 | 9 | 11 | 11 | 7 | 8 | 5 | 5 | 9 | 7 | 5 |
| 2005 | 68 | 4 | 5 | 6 | 5 | 10 | 2 | 5 | 5 | 6 | 9 | 7 | 4 |
| 2004 | 85 | 2 | 9 | 16 | 15 | 8 | 8 | 10 | 7 | 5 | 5 | ||
| 998 |