1967

6.7

1974

7.9

1932

7.0

1966

6.7

2001

7.8

1992

7.3

1980

6.5

1944

6.7

1964

6.8

1971

6.1

1963

6.3

1972

5.3

1975

4.3

1968

6.4

2003

5.8

1979

7.5

2001

5.3

1981

3.8

1946

6.8

1969

5.7