1989

8.1

1986

6.0

1999

7.5

1992

7.0

1987

0.0

1997

7.5

1970

6.8

1985

2.0

1974

5.5

1984

7.0

1978

7.1

2015

5.8

1977

6.4

1977

7.4

1975

7.7

2017

4.3

1975

0.0