Year Total 1992 707.5 1993 707.5 1994 707.5 1995 730.4 1996 755.4 1997 779.2 1998 481.7 1999 496.1 2000 507.8 2001 531.3 2002 547.5 2003 563.7 2004 481.7 2005 499.8 2006 514.6 2007 529.9 2008 545.6 2009 561.5