1972

2.5

1981

5.4

1986

5.0

1981

3.3

1978

4.5

1980

0.8

1973

5.3

1978

2.5

1983

0.0

1992

0.0

1975

4.0

1980

1.0

1980

2.5

1972

5.2

1977

6.0

1979

5.5

1975

3.7

1978

5.8

1976

3.0

1977

2.0

1959

5.7

1977

2.0

1979

1.0