2012

6.7

1952

6.7

1986

6.7

1921

6.8

1972

7.9

2011

6.9

2001

4.9

1990

6.8

1966

6.6

1948

7.2

1986

6.6

1965

6.8

1931

6.9

1953

6.9

1993

5.0

1987

6.5

1995

6.4

1995

7.7

1994

4.8

1990

6.1