1979

7.1

1945

5.6

1963

7.9

1943

7.7

1954

6.1

1962

5.7

1951

8.3

1943

5.9

1946

4.8

1961

5.5

1950

6.1

1949

6.4

1965

6.0

1949

7.2

1956

6.5

1947

6.5

1954

6.2

1942

7.3

1950

6.9

1944

5.5

1961

6.0

1943

6.4

1948

7.5