1984

7.2

2003

7.1

1983

5.7

1973

8.0

2009

6.7

2007

6.3

1949

6.6

2010

7.4

1956

7.3

2005

7.0

2005

6.2

1945

7.2

1948

6.0

2000

5.3

1979

4.5

2021

0.0

1963

3.6

1947

6.0

1937

4.0

1918

6.5