1958

6.6

2010

6.2

1969

7.7

2006

6.2

1964

6.5

1940

8.1

1952

6.7

1938

7.1

1965

7.7

1976

6.6

1970

7.1

2021

5.6

2012

6.4

1998

6.2

1960

7.3

1994

5.7

1955

5.6

1955

7.2

2007

5.1

2015

6.0