Year Age 1990 350 1991 1400 1992 3900 1993 8900 1994 18000 1995 34000 1996 63000 1997 110000 1998 160000 1999 200000 2000 230000 2001 250000 2002 260000 2003 280000 2004 290000 2005 300000 2006 310000 2007 320000 2008 300000 2009 280000 2010 250000 2011 230000