1983

3.5

1977

0.0

1994

8.5

2007

6.4

2006

6.3

1970

3.8

1951

1.0

2006

6.2

1971

7.2

2002

9.1

1981

4.7

2004

5.2

1979

7.0

2014

6.4

2002

6.0

2008

2.5

1981

1.0

2003

6.6

1988

0.0

1978

6.1