| Year |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| 1987 |
1 |
2 |
0 |
2 |
1 |
1 |
0 |
2 |
1 |
1 |
4 |
0 |
| 1988 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
| 1989 |
0 |
1 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| 1990 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
3 |
1 |
1 |
| 1991 |
1 |
2 |
0 |
0 |
0 |
4 |
1 |
0 |
0 |
0 |
0 |
0 |
| 1992 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| 1993 |
0 |
2 |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
| 1994 |
1 |
0 |
0 |
1 |
0 |
2 |
0 |
0 |
0 |
0 |
3 |
1 |
| 1995 |
1 |
0 |
1 |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
3 |
0 |
| 1996 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
| 1997 |
0 |
1 |
4 |
1 |
2 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
| 1998 |
1 |
0 |
1 |
2 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
1 |
| 1999 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
| 2000 |
0 |
1 |
0 |
3 |
0 |
1 |
0 |
2 |
0 |
0 |
0 |
0 |
| 2001 |
0 |
0 |
2 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
| 2002 |
0 |
0 |
0 |
1 |
3 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
| 2003 |
0 |
2 |
2 |
1 |
0 |
1 |
1 |
3 |
0 |
0 |
0 |
0 |
| 2004 |
1 |
1 |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
3 |
1 |
| 2005 |
2 |
0 |
2 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
| 2006 |
0 |
0 |
3 |
1 |
1 |
0 |
1 |
1 |
2 |
0 |
2 |
0 |
| 2007 |
0 |
2 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
0 |
| 2008 |
1 |
1 |
0 |
2 |
1 |
0 |
1 |
0 |
2 |
1 |
1 |
1 |
| 2009 |
1 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
2 |
0 |
| 2010 |
2 |
0 |
0 |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
2 |
0 |
| 2011 |
0 |
2 |
0 |
3 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
| 2012 |
0 |
0 |
1 |
0 |
3 |
5 |
0 |
0 |
0 |
2 |
1 |
1 |
| 2013 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
| 2014 |
2 |
0 |
0 |
2 |
1 |
0 |
1 |
0 |
0 |
1 |
4 |
0 |
| 2015 |
1 |
0 |
1 |
1 |
1 |
0 |
0 |
1 |
2 |
1 |
20 |
3 |
| 2016 |
3 |
0 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
3 |
3 |
1 |
| 2017 |
0 |
2 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |