2012

8.9

2011

8.1

2011

8.3

2014

8.3

2001

8.6

2006

8.6

2015

8.2

1959

8.4

2010

8.5

2013

7.9

2004

8.1

2005

8.1

2001

8.1

2010

8.1

1984

7.4

2017

7.1

1980

8.6

2014

6.4

1993

7.9

1995

7.8