2016

5.9

2010

6.3

2016

5.8

2007

5.7

2016

6.9

2018

7.8

2003

6.0

1983

6.7

1992

5.0

2007

7.3

2015

7.2

1960

7.8

2010

5.8

2008

7.8

2014

5.6

2017

6.0

2003

6.1

2000

6.6

2016

7.1