1982

0.0

1997

6.3

1988

5.0

1994

7.7

1998

5.7

1992

6.0

1991

5.3

1989

0.0

1987

0.0

1986

0.0

2007

1.0

2006

0.0

2006

0.0

2006

3.0

2005

5.2

2005

4.0

2005

0.0

1997

0.0

1987

8.3

1995

6.0