1967

0.0

1995

3.8

1962

6.4

1957

7.1

1940

6.1

1939

6.6

1997

6.0

2019

7.4

1971

5.4

1958

5.5

1960

6.5

1973

4.6

2015

4.6

2010

7.1

2009

6.0

2011

5.9

2007

4.7

2009

5.1

1964

7.3

1982

6.3