2010 – 8 billets
2009 – 57 billets
2008 – 114 billets
2007 – 119 billets
2006 – 48 billets
2005 – 169 billets
2004 – 282 billets
2003 – 833 billets
2002 – 271 billets
1999 – 20 billets