1972

6.9

1983

5.7

1969

6.8

1975

7.8

1953

0.0

1981

3.8

1980

5.4

1966

0.0

1989

5.6

1977

4.4

1983

6.7

1973

4.0

1990

7.4

1978

6.3

1983

4.5

1963

6.8

1959

5.8

1975

2.0