Year	Total
1990	50000
1991	100000
1992	150000
1993	200000
1994	250000
1995	300000
1996	350000
1997	400000
1998	480000
1999	600000
2000	713000
2001	800000
2002	1800000
2003	2100000
2004	2450000
2005	2800000
2006	3200000