2009

4.9

2006

7.8

2015

7.5

1982

6.5

2014

5.7

2006

8.0

2013

8.9

1947

5.8

2010

6.7

2006

6.8

1977

5.3

1931

5.7

2015

5.9

2010

7.0

2016

3.0

2014

3.2

2003

3.4