2011

6.2

2008

7.7

1994

8.3

2015

6.7

2013

7.5

1985

5.3

2010

7.1

2009

7.8

2012

6.5

2010

6.2

1989

6.3

2009

7.4

1958

8.2

1996

6.7

2009

6.0

2018

6.8

2013

6.2

2014

5.6

2005

5.7

2013

7.3