1987

7.1

1972

6.2

1953

6.6

2012

6.3

2008

7.2

2009

6.4

1933

7.5

2014

7.0

1985

6.2

1997

6.2

2008

4.7

2016

4.5

1977

5.9

2009

6.1

1995

5.6

1975

7.3

1980

6.0

1963

7.9

1966

5.9