| 2011 |  |
| 2010 | |
| 2009 | |
| 2008 | |
| 2007 | |
| 2006 | |
| 2005 | |
| 2004 | |
| 2003 | |
| 2002 | |
| 2001 | |
| 2000 | |
| 1999 | |
| 1998 | |
| 1997 | |
| 1996 |  |
| 1995 |   |
| 1994 |   |
| 1993 |   |
| 1992 |  |
| 1991 |  |
| 1990 |  |
| 1989 |  |
| 1988 |  |
| 2011 | 1 | | | | | | | | 1 | | | | |
| 2010 | - | | | | | | | | | | | | |
| 2009 | - | | | | | | | | | | | | |
| 2008 | - | | | | | | | | | | | | |
| 2007 | - | | | | | | | | | | | | |
| 2006 | - | | | | | | | | | | | | |
| 2005 | - | | | | | | | | | | | | |
| 2004 | - | | | | | | | | | | | | |
| 2003 | - | | | | | | | | | | | | |
| 2002 | - | | | | | | | | | | | | |
| 2001 | - | | | | | | | | | | | | |
| 2000 | - | | | | | | | | | | | | |
| 1999 | - | | | | | | | | | | | | |
| 1998 | - | | | | | | | | | | | | |
| 1997 | - | | | | | | | | | | | | |
| 1996 | 1 | | | | | 1 | | | | | | | |
| 1995 | 4 | | | 1 | | | 1 | | 2 | | | | |
| 1994 | 4 | 1 | | 1 | | | 1 | | | | 1 | | |
| 1993 | 7 | 1 | 1 | | 1 | | 2 | 1 | 1 | | | | |
| 1992 | 10 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | 1 | 1 | | 1 |
| 1991 | 7 | | | 1 | | 1 | | 1 | 1 | 1 | 1 | 1 | |
| 1990 | 4 | | | | 1 | | | | 1 | 1 | | | 1 |
| 1989 | 4 | 1 | 1 | | | | 1 | | | | 1 | | |
| 1988 | 1 | | | | | | | | | | | 1 | |
| | 43 | | | | | | | | | | | | |