Year	Total
1990	200000
1991	260000
1992	370000
1993	520000
1994	710000
1995	980000
1996	1300000
1997	1600000
1998	1700000
1999	1900000
2000	2100000
2001	2300000
2002	2519000
2003	2759000
2004	3022000
2005	3285000
2006	4510000