1

1978

1

1979

1

1980

5

1981

17

1982

1

1983

1

1986

1

1987

29

1988

35

1989

43

1990

5

1991

12

1992

23

1993

1

1994

1

1995

1

1996

1

1997

1

1998

1

1999

1

2000