2010

7.0

1992

7.4

1985

5.8

1988

5.2

1991

8.3

1968

8.1

2007

7.2

1983

7.9

2007

6.8

1989

7.8

1995

8.4

1975

8.0

1939

7.9

1985

6.6

1971

6.4

2014

8.5

1978

8.0

2019

8.1

1976

8.1

1971

6.5