1975

7.3

2016

7.0

2020

1.0

1980

6.0

2005

4.0

1974

7.7

1985

5.0

2001

4.5

1982

7.5

1989

6.1

1999

4.3

1980

7.3

1982

6.2

1984

7.3

2001

4.0

1982

7.9

1976

7.5

1982

7.1

2020

6.9

1982

6.3

1978

7.2

2009

8.5

1992

0.0

1982

5.5

1977

6.3

1984

4.9

1988

3.5

1977

7.7

1988

4.0

1983

0.0

0.0