1986

7.7

1955

7.9

1974

6.5

2013

4.6

2000

5.7

2010

7.1

1933

7.2

1962

7.9

2008

5.7

1968

7.3

1955

7.3

1963

7.5

1977

6.6

2017

7.7

2012

5.0

1993

6.9

2011

6.9

2011

7.1

1958

7.8

2014

4.9