- 1988 to 1988 74,159
- 1989 to 1989 76,693
- 1990 to 1990 81,559
- 1991 to 1991 81,577
- 1992 to 1992 85,466
- 1993 to 1993 87,448
- 1994 to 1994 92,991
- 1995 to 1995 106,283
- 1996 to 1996 114,505
- 1997 to 1997 118,355
- 1998 to 1998 120,550
- 1999 to 1999 115,652
- 2000 to 2000 120,646