1935

4.7

1968

7.3

1974

6.5

2003

5.9

1972

7.0

1961

8.0

1971

7.4

1944

6.0

2007

7.6

2009

4.6

1963

6.5

1966

4.5

1967

7.3

2014

6.7

1955

6.7

1997

6.7

1937

7.2

1956

7.1

1970

5.0

1944

5.7