2002

6.8

2000

6.3

1960

8.2

1930

6.1

1964

6.8

1983

5.7

2007

4.5

1988

6.6

1961

7.5

1983

7.1

1984

6.3

1946

7.0

2013

0.0

1947

6.2

1932

5.0

1938

5.3

1987

5.3

1988

6.4

1991

5.8

1982

6.9