Year	Total
1990	6200000
1991	7200000
1992	8400000
1993	9600000
1994	9900000
1995	11800000
1996	12700000
1997	14100000
1998	15900000
1999	18000000
2000	20190000
2001	22000000
2002	23970000
2003	26120000
2004	35890000
2005	45660000
2006	48600000