2009

5.9

2014

7.4

2007

0.0

1995

6.1

2009

6.5

2000

10.0

2009

6.9

1970

5.5

1983

7.6

1970

6.2

1981

7.0

2005

6.8

2013

7.5

2012

7.0

2008

5.1

1978

6.7

1971

4.5

2002

6.9

1968

7.4

2008

6.1