- 1988 to 1988 74,160
- 1989 to 1989 76,694
- 1990 to 1990 81,560
- 1991 to 1991 81,578
- 1992 to 1992 85,467
- 1993 to 1993 87,450
- 1994 to 1994 92,992
- 1995 to 1995 106,284
- 1996 to 1996 114,506
- 1997 to 1997 118,356
- 1998 to 1998 120,551
- 1999 to 1999 115,653
- 2000 to 2000 120,647