1985

5.0

1992

6.0

1998

5.7

1990

4.0

2001

0.0

1999

3.5

1996

7.5

1988

5.8

1988

9.0

2002

0.0

2000

10.0

1995

6.7

1994

3.8

1997

6.7

1991

5.5

1999

5.5

2001

5.6

1996

3.5

1994

5.3

1990

0.0

1988

6.0

1996

0.0