Year Age 1979 260 1990 180000 1991 180000 1992 180000 1993 180000 1994 180000 1995 180000 1996 180000 1997 170000 1998 170000 1999 160000 2000 160000 2001 150000 2002 150000 2003 140000 2004 140000 2005 130000 2006 130000 2007 130000 2008 120000 2009 120000 2010 120000 2011 120000