2014

7.0

1975

7.9

1966

6.7

2013

6.1

2002

4.7

2012

6.4

6.1

2008

5.7

2004

5.9

1966

7.2

2011

5.7

2013

5.7

2023

9.2

2017

4.9

2007

5.4

2017

5.9

2017

6.8

2017

5.9

2004

6.0

2015

5.3