1996

0.0

1994

5.0

1993

6.8

1991

7.3

1989

6.0

1989

0.0

1987

0.0

2007

0.0

2007

0.0

2006

5.0

2006

0.0

2005

3.6

2005

6.0

1998

6.6

1991

5.3

2004

5.2

2006

4.7

1992

5.0

2000

6.5

2003

5.1