2012

6.3

2006

7.0

2008

7.8

1993

6.1

2013

7.6

1965

6.9

2014

7.7

2015

5.9

2016

5.9

2015

7.4

2010

5.1

6.4

2017

6.7

1994

6.5

2009

6.1

0.0

2001

7.2

2020

7.4

2007

5.2

1993

6.5