Year Total 1990 2000 1991 5000 1992 13000 1993 18000 1994 22000 1995 33000 1996 80000 1997 110000 1998 130000 1999 150000 2000 195000 2001 200000 2002 600000 2003 620000 2004 700000 2005 850000 2006 865000