1940

7.9

1995

6.7

1971

7.2

1950

7.1

1983

7.9

1927

7.8

1965

8.1

1952

7.3

1985

7.2

1998

6.6

1941

7.0

2004

6.8

2017

6.5

2014

6.3

2004

7.5

2008

5.1

1944

5.0

1987

7.1

1927

0.0

2003

7.9