1943

5.1

1962

6.3

1969

6.3

1957

6.8

1944

6.0

1967

6.4

1974

6.2

1971

5.4

1964

6.1

1958

6.6

1970

5.8

1966

4.1

1974

4.1

1972

4.8

1972

6.5

1983

6.1

2001

5.3

1999

5.9

2003

6.1

1933

7.5