1997

6.2

2013

6.1

2013

7.6

2011

5.1

2018

7.2

1953

7.2

2002

6.0

2004

5.9

2008

6.5

2001

7.8

2014

7.3

2002

4.6

2015

6.8

2002

6.4

2020

5.8

1995

7.3

2006

6.6

2012

7.7

2002

6.0

2015

6.9