1969

0.0

1979

3.8

1978

4.8

1976

5.1

1972

6.2

1986

5.8

1975

5.5

1985

5.7

1985

6.3

1984

6.8

1987

5.7

1968

10.0

1976

2.6

1981

6.5

1976

4.2

1973

0.0

1992

4.1

1979

5.2

1983

5.8

1986

6.3

1963

5.9

1980

7.1

1982

7.0

1986

5.5

1986

5.2