1992 1,014
1993 777
1994 615
1995 529
1996 637
1997 579
1998 608
1999 668
2000 699
2001 737
2002 790
2003 864
2004 943
2005 1,178
2006 1,565
2007 1,931
2008 2,112
2009 2,278
2010 2,364
2011 2,337
2012 2,356
2013 2,473