1979

6.0

1993

5.7

1994

6.6

1973

7.0

1978

0.0

1980

6.5

1976

5.4

1998

7.3

1983

6.5

1989

0.0

1977

2.0

1985

7.2

1981

0.0

2010

8.0

1995

6.8

1986

0.0

1983

3.3

1992

8.2

1981

3.7