2006

4.6

2009

5.6

2008

5.2

2007

4.9

2004

4.7

2007

4.6

1954

5.2

2006

5.1

2015

0.0

1978

4.2

1969

6.6

1981

5.4

2015

5.7

2008

0.0

1976

3.6

1975

5.9

2010

3.9

1987

4.5

1964

6.2

1941

7.0