1987

7.3

1996

6.5

1977

6.7

1977

8.8

1948

8.0

1952

6.3

2019

8.1

2007

6.4

2004

6.4

1951

6.4

1984

7.2

1978

7.4

2004

6.8

1971

0.0

2010

8.0

2006

6.2

1980

6.4

1945

6.1

1959

0.0

1979

0.0