- 1988 to 1988 73,669
- 1989 to 1989 76,340
- 1990 to 1990 81,097
- 1991 to 1991 81,241
- 1992 to 1992 85,220
- 1993 to 1993 87,249
- 1994 to 1994 92,789
- 1995 to 1995 106,083
- 1996 to 1996 114,412
- 1997 to 1997 118,316
- 1998 to 1998 120,586
- 1999 to 1999 115,669
- 2000 to 2000 120,627