Year	Total
1984	62
1985	531
1986	727
1987	1019
1988	1451
1989	1960
1990	3347
1991	4728
1992	29620
1993	32720
1994	37660
1995	41740
1996	49640
1997	81270
1998	111100
1999	119500
2000	140300
2001	155100
2002	162100