1979

0.0

1971

6.3

2018

5.3

1985

7.0

2013

5.1

2017

6.1

1969

0.0

1978

0.0

1981

8.0

1948

7.0

2007

5.9

2000

6.4

1978

0.0

1990

6.9

1953

6.9

1968

6.5

1958

6.0

1983

5.7

1992

7.4

1933

6.1