1951

7.9

1949

6.9

1964

5.3

1963

7.0

1949

6.7

1953

8.3

1954

6.1

1951

4.4

1956

5.0

1953

7.5

1960

5.1

1966

6.2

1955

5.0

1946

4.8

1950

6.1

1963

4.2

1953

5.3

1957

5.5

1948

7.5