1985

5.3

1929

7.5

1984

6.1

1968

6.7

1990

6.1

1977

5.9

1961

7.5

1974

6.4

1942

6.9

5.4

1934

7.8

2009

7.4

1994

5.8

1946

7.6

1973

7.2

1988

5.5

2001

5.2

2007

6.5

1981

7.0

1963

6.8