2008

5.9

2009

6.3

2006

4.6

1986

4.6

1986

5.0

1967

7.8

2009

5.8

1977

6.3

2008

6.4

2014

7.7

1993

6.3

2001

7.5

1979

6.0

2016

5.2

2004

5.2

2000

5.0

2000

7.4

1995

7.2

2014

6.5

2003

5.0