2010

6.7

1976

0.0

1981

1.0

1965

5.7

1969

5.2

1966

7.5

1977

6.9

1974

4.5

1976

4.9

1971

6.3

1980

6.1

1991

5.6

1980

6.3

1972

5.7

1964

6.4

1976

1.3