1968

6.9

1974

8.6

2011

7.1

1941

8.0

1993

6.1

1954

7.9

1955

7.3

1984

7.2

2010

6.6

1977

8.0

2018

7.0

1999

8.4

1994

8.7

1970

7.6

1965

7.2

1994

7.9

1939

7.5

1986

5.6

2006

7.5

1954

7.4