2015

8.2

2004

7.8

2016

7.1

1994

8.4

2016

7.3

1966

7.6

2003

7.8

1992

6.8

2013

8.0

2014

8.1

1985

7.7

2010

7.8

2005

7.9

2009

8.3

1983

7.5

2014

8.0

2003

8.2

2005

7.7

2013

7.5

2006

7.8