2010

6.8

2006

5.5

2011

6.0

2008

6.8

2011

6.3

2007

7.5

2003

6.0

2006

6.2

2010

6.3

2014

6.2

2011

5.3

1956

7.1

2012

6.9

1990

7.8

2015

6.0

2014

6.1

2013

7.7

1999

5.2

2020

7.1

2014

6.4