1947

10.0

2008

7.2

1944

7.2

2003

7.5

2010

6.6

1956

6.9

2008

8.0

1959

6.7

1982

5.9

1926

6.6

2012

1.0

1975

8.5

0.0

2007

8.2

2009

6.0

2015

6.6

2013

6.8

1988

8.5

2017

10.0

2016

6.1