Year Age 1990 32000 1991 39000 1992 45000 1993 51000 1994 56000 1995 59000 1996 59000 1997 38000 1998 33000 1999 25000 2000 20000 2001 20000 2002 20000 2003 20000 2004 20000 2005 20000 2006 20000 2007 20000 2008 19000 2009 19000 2010 20000 2011 20000