2014

6.2

2007

5.6

1993

5.5

1967

6.6

2016

6.9

2012

5.8

2003

5.5

2001

6.4

1988

5.7

2016

5.7

2010

6.7

1995

6.9

2003

5.7

1995

7.3

2016

6.2

2013

7.0

1963

7.0

2011

7.0

2017

6.4

1995

5.4