1982

6.1

2009

5.3

1986

6.8

1948

7.3

2012

4.9

1975

7.2

2009

7.9

2001

5.2

1968

6.6

1991

5.6

1966

6.5

1947

7.5

1998

6.1

1989

5.8

1979

7.6

1939

7.2

1979

6.7

1955

7.2

1921

7.8

2025

6.7