1978

0.0

1973

7.1

1959

8.1

1974

8.6

1990

7.4

1961

7.3

1983

8.2

1987

7.8

1989

6.3

2014

7.5

1938

6.5

2002

6.5

2006

7.3

1960

6.4

1980

7.1

2011

6.0

1942

6.2

2016

6.8

1986

6.6

1997

6.1