Year	Total
1984	1852
1985	1991
1986	2268
1987	2319
1988	2464
1989	3397
1990	3642
1991	3555
1992	13400
1993	42930
1994	51760
1995	58700
1996	71650
1997	106700
1998	145100
1999	159700
2000	198700
2001	230900
2002	251900