Year Age 1990 23000 1991 32000 1992 43000 1993 55000 1994 68000 1995 82000 1996 96000 1997 110000 1998 120000 1999 140000 2000 150000 2001 150000 2002 160000 2003 160000 2004 150000 2005 150000 2006 140000 2007 130000 2008 110000 2009 98000 2010 78000 2011 58000