Year	Total
1990	300000
1991	370000
1992	500000
1993	680000
1994	850000
1995	1100000
1996	1200000
1997	1500000
1998	1900000
1999	2400000
2000	2670000
2001	3300000
2002	4079000
2003	5480000
2004	4520000
2005	5346000
2006	6456000