2009

5.3

2007

7.6

2014

7.8

2021

6.2

2001

8.0

2017

8.0

2009

7.9

1957

7.2

2006

5.5

2018

6.9

2017

6.2

2010

8.0

2013

7.6

2004

6.0

2011

6.8

2015

7.0

1998

6.2

2005

6.2

2014

6.4

2015

6.0