Year	Number
1982	48548
1983	49209
1984	54515
1985	57555
1986	55218
1987	54343
1988	55187
1989	46575
1990	59705
1991	24351
1992	27871
1993	43282
1994	45819
1995	63484
1996	52052
1998	18913
1999	4540