1946

5.2

1948

6.8

1965

6.7

1964

4.7

1970

7.2

1962

5.6

1948

4.8

1970

6.1

2002

3.8

1961

5.6

1983

5.0

1958

6.0

1959

6.3

1970

7.3

1947

6.8