2008

4.4

1947

5.0

2013

7.3

2009

5.4

1978

7.5

2004

7.7

2002

7.6

1972

6.2

1976

8.0

2007

5.4

2008

4.1

2006

7.5

2014

5.9

2017

0.0

2005

7.8

2007

5.9

1995

5.3

2000

4.3

1994

5.3

2002

0.0