Year	Total
1984	6107
1985	28940
1986	31380
1987	33900
1988	38960
1989	43560
1990	49400
1991	48500
1992	52940
1993	55560
1994	63310
1995	69740
1996	78280
1997	112900
1998	147600
1999	162400
2000	201600
2001	233700
2002	254400