2008

5.9

2007

4.6

1986

4.6

1986

5.0

1967

7.8

1974

5.7

2009

5.8

2008

6.4

2014

7.7

2001

7.5

1979

6.0

2016

5.2

2000

5.0

1995

7.2

2006

5.2

2016

6.4

2006

6.2

2006

6.1

2013

3.5

1999

7.5