1997

4.5

1981

4.8

1998

10.0

1988

0.0

1985

6.4

1993

0.0

1964

7.0

1973

0.0

1986

5.8

1980

0.0

2007

3.5

1978

2.7

1991

0.0

1970

6.1

1982

9.4

1971

0.0

1989

5.9

1979

3.8

1987

4.0

1982

0.0

1995

5.7

1964

0.0