2010

6.6

2011

7.1

1939

7.5

2003

6.1

2008

6.1

1965

6.8

1968

6.9

1967

6.8

1928

7.9

2002

9.5

1975

6.5

1940

7.8

1959

8.2

1950

8.0

2014

7.1

1999

7.6

1965

7.4

1998

7.7

1924

8.1

1973

7.1