- 1986 to 1986 67,691
- 1987 to 1987 70,803
- 1988 to 1988 74,161
- 1989 to 1989 76,695
- 1990 to 1990 81,561
- 1991 to 1991 81,579
- 1992 to 1992 85,468
- 1993 to 1993 87,451
- 1994 to 1994 92,993
- 1995 to 1995 106,285
- 1996 to 1996 114,506
- 1997 to 1997 118,356
- 1998 to 1998 120,552
- 1999 to 1999 115,653