1983

6.7

1966

7.9

1986

7.0

1995

7.3

1969

6.8

0.0

1979

5.5

1972

6.5

1957

5.9

1989

4.4

1999

3.3

1978

6.4

1936

6.9

1976

0.0

1951

6.5

1977

6.6

1957

6.4

2014

0.0

2011

5.7

1934

5.5