2000

5.8

2001

5.2

2007

4.6

2003

3.8

2008

4.5

1996

0.0

1998

5.5

2002

0.0

2010

5.1

1999

5.9

0.0

1988

0.0

2002

0.0

2007

4.0

2003

5.0

1991

0.0

2008

6.8

1997

7.0

2011

5.3

2005

6.0

1998

2.0

1997

5.0

1999

5.0

2007

0.0