Year Per Capita 1990 19350 1991 16230 1992 15660 1993 16040 1994 16590 1995 17410 1996 18220 1997 17660 1998 17540 1999 17470 2000 17760 2001 18780 2002 19160 2003 19580 2004 20510 2005 20780 2006 21840 2007 23710 2008 23560 2009 23350 2010 23180 2011 23250