Year Total 1990 230000 1991 300000 1992 450000 1993 570000 1994 680000 1995 810000 1996 1000000 1997 1200000 1998 1300000 1999 1382000 2000 1714000 2001 2003000 2002 2461000 2003 3024000 2004 3716000 2005 4408000