| Year | |
|---|---|
| 1981 | 0 |
| 1982 | 0 |
| 1983 | 0 |
| 1984 | 0 |
| 1985 | 0 |
| 1986 | 0 |
| 1987 | 0 |
| 1988 | 0 |
| 1989 | 0 |
| 1990 | 0 |
| 1991 | 0 |
| 1992 | 0 |
| 1993 | 0 |
| 1994 | 0 |
| 1995 | 0 |
| 1996 | 0 |
| 1997 | 0 |
| 1998 | 0 |
| 1999 | 468 |
| 2000 | 732 |
| 2001 | 831 |
| 2002 | 718 |
| 2003 | 870 |
| 2004 | 970 |
| 2005 | 1,075 |
| 2006 | 1,068 |
| 2007 | 1,081 |
| 2008 | 1,248 |
| 2009 | 988 |
| 2010 | 1,108 |
| 2011 | 1,110 |
| 2012 | 1,180 |
| 2013 | 1,213 |
| 2014 | 1,216 |
| 2015 | 931 |
| 2016 | 887 |
| 2017 | 714 |
| 2018 | 767 |
| 2019 | 995 |
| 2020 | 756 |
| 2021 | 862 |
| 2022 | 1,153 |
| 2023 | 1,109 |