2005

6.2

1959

5.5

1946

4.8

2009

4.8

1953

5.3

1959

4.3

1952

6.4

1996

5.6

1948

6.5

1953

5.1

1956

4.9

1954

5.5

1940

5.6

1945

6.3

1949

4.8

1959

4.9

1947

6.1

1954

5.0

1953

4.6

1944

2.7