1978

7.7

1967

5.7

1985

6.0

2000

7.9

1998

7.4

1976

8.0

1962

4.6

1969

5.5

1969

1.0

1966

8.5

1993

6.1

1962

0.0

1958

6.9

1977

6.3

1963

8.2

1957

5.0

2001

7.0

1953

5.3