Year Total 1990 380000 1991 410000 1992 420000 1993 430000 1994 540000 1995 650000 1996 750000 1997 850000 1998 1000000 1999 1200000 2000 1300000 2001 2300000 2002 2400000 2003 2600000 2004 2800000 2005 3150000 2006 3500000