1993

6.9

1944

7.6

2011

5.5

2014

7.8

1962

7.8

1960

7.5

2008

5.9

2012

7.7

2001

6.2

2015

6.2

2015

4.6

1936

6.3

2016

7.8

1982

6.7

2013

7.2

2013

7.9

2008

7.0

2014

6.7

1990

6.4

2000

7.2