1979

0.0

2004

3.1

1994

4.4

1975

7.9

2002

4.3

1988

4.5

1976

5.2

1998

4.2

1969

3.3

1974

6.3

1987

0.0

1971

0.0

2002

4.2

1974

0.0

1973

0.0