1987

6.6

1990

6.0

1993

4.0

1981

0.0

1997

1.0

1999

0.0

1987

0.0

2011

8.0

1993

0.0

1980

6.4

2000

5.0

1978

0.0

1990

0.0

1992

8.0

1984

5.5

1996

6.2

1979

5.9

1977

5.6

1988

7.6

2013

0.0

1987

3.7

1990

0.0

1988

0.0

1978

6.5

1986

0.0

1983

5.0