1985

5.6

1979

6.4

1972

1.0

1983

0.0

1973

6.1

1978

7.0

1985

5.5

1980

5.3

1972

2.8

1971

8.4

1975

6.4

1984

2.0

1976

6.5

1981

0.0

1974

2.5