1977

7.7

1960

0.0

1974

6.9

1957

6.2

1971

5.3

2000

7.7

1973

6.4

1951

8.7

1953

8.0

1998

7.0

2001

7.6

1992

0.0

1958

5.5

1974

0.0

1976

7.5

1948

4.7

1980

7.0

1963

7.0

1963

5.8

1948

6.0

1980

5.2

1960

6.0