2013

6.8

2008

8.9

2014

7.8

2009

6.8

2001

7.6

1994

8.4

2017

7.6

2009

7.2

2015

6.8

2013

7.6

2009

8.0

2020

6.5

2010

7.8

2007

7.6

2006

8.2

1998

6.9

2016

8.3

2019

7.8

1987

7.7

1966

7.2