Date
- 1980 to 1993 [remove] 2,334
- 1980 to 1980 1,943
- 1981 to 1981 601
- 1982 to 1982 591
- 1983 to 1983 584
- 1984 to 1984 596
- 1985 to 1985 607
- 1986 to 1986 453
- 1987 to 1987 409
- 1988 to 1988 399
- 1989 to 1989 383
- 1990 to 1990 316
- 1991 to 1991 59
- 1992 to 1992 56
- 1993 to 1993 54