1977

1.0

1971

0.0

1979

4.6

1975

6.6

1967

5.3

1991

5.6

1978

0.0

1969

6.1

1984

7.5

1976

6.2

1983

2.3

1976

7.5

1978

5.9

1973

6.0

1968

6.6

2011

9.5

1973

6.5

1975

0.0

1962

6.2

1993

5.8

1972

7.7

1979

7.8

2011

10.0

1969

6.0