1997

6.0

1987

8.2

1993

7.0

1988

7.5

1994

0.0

1990

0.0

1992

0.0

1991

4.3

2001

4.5

1991

0.0

1999

0.0

1998

0.0

1995

5.7

2003

0.0

1990

0.0