- 1988 to 1988 73,640
- 1989 to 1989 76,308
- 1990 to 1990 81,064
- 1991 to 1991 81,207
- 1992 to 1992 85,183
- 1993 to 1993 87,211
- 1994 to 1994 92,753
- 1995 to 1995 106,042
- 1996 to 1996 114,376
- 1997 to 1997 118,280
- 1998 to 1998 120,540
- 1999 to 1999 115,626
- 2000 to 2000 120,580