Year	Total
1984	20540
1985	18700
1986	17550
1987	14650
1988	16810
1989	16300
1990	14190
1991	15470
1992	18330
1993	14580
1994	11640
1995	9139
1996	7145
1997	7283
1998	9572
1999	13780
2000	12120
2001	12020
2002	12950