| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 2021 | 1 | 1 | |||||||||||
| 2020 | - | ||||||||||||
| 2019 | 17 | 1 | 1 | 4 | 2 | 1 | 3 | 1 | 1 | 3 | |||
| 2018 | 26 | 1 | 3 | 2 | 2 | 1 | 3 | 1 | 1 | 3 | 5 | 2 | 2 |
| 2017 | 18 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 3 | 1 | |||
| 2016 | 19 | 1 | 2 | 4 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 3 | |
| 2015 | 12 | 1 | 1 | 4 | 2 | 2 | 1 | 1 | |||||
| 2014 | 15 | 1 | 1 | 3 | 1 | 1 | 3 | 3 | 2 | ||||
| 2013 | 9 | 3 | 2 | 2 | 2 | ||||||||
| 2012 | 13 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | |||
| 2011 | 24 | 2 | 1 | 3 | 3 | 2 | 4 | 4 | 2 | 2 | 1 | ||
| 2010 | 25 | 2 | 1 | 3 | 1 | 2 | 3 | 3 | 1 | 4 | 4 | 1 | |
| 2009 | 19 | 1 | 2 | 1 | 2 | 2 | 1 | 2 | 2 | 4 | 2 | ||
| 2008 | 19 | 1 | 1 | 2 | 1 | 3 | 3 | 1 | 4 | 2 | 1 | ||
| 2007 | 18 | 3 | 1 | 1 | 4 | 1 | 4 | 3 | 1 | ||||
| 2006 | 21 | 1 | 2 | 1 | 2 | 3 | 3 | 3 | 1 | 1 | 1 | 3 | |
| 2005 | 10 | 3 | 1 | 2 | 1 | 1 | 1 | 1 | |||||
| 2004 | 7 | 1 | 1 | 1 | 2 | 1 | 1 | ||||||
| 2003 | 17 | 3 | 2 | 1 | 2 | 2 | 3 | 3 | 1 | ||||
| 2002 | 23 | 3 | 1 | 2 | 1 | 3 | 5 | 3 | 2 | 1 | 2 | ||
| 2001 | 15 | 2 | 3 | 5 | 1 | 2 | 1 | 1 | |||||
| 2000 | 77 | 6 | 7 | 2 | 5 | 7 | 7 | 9 | 6 | 5 | 14 | 6 | 3 |
| 1999 | 40 | 4 | 1 | 1 | 1 | 1 | 2 | 4 | 9 | 8 | 9 | ||
| 1998 | 22 | 2 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 3 | 1 | ||
| 1997 | 17 | 1 | 3 | 6 | 4 | 3 | |||||||
| 484 |
