Year	Total
1984	554
1985	14770
1986	16850
1987	18930
1988	23830
1989	28360
1990	34780
1991	35980
1992	39960
1993	43500
1994	51170
1995	58060
1996	70850
1997	106500
1998	144400
1999	159600
2000	198600
2001	230700
2002	251600