Year Age 1990 180000 1991 200000 1992 200000 1993 200000 1994 190000 1995 170000 1996 160000 1997 150000 1998 140000 1999 140000 2000 140000 2001 140000 2002 140000 2003 140000 2004 140000 2005 140000 2006 140000 2007 140000 2008 140000 2009 140000 2010 140000 2011 150000