Year Total 1990 500000 1991 570000 1992 650000 1993 720000 1994 810000 1995 1200000 1996 1400000 1997 1600000 1998 1800000 1999 1860000 2000 2050000 2001 2200000 2002 2300000 2003 2405000 2004 2515000 2005 2625000