2006

0.0

1996

6.5

1995

5.8

1997

5.4

2000

0.0

2006

0.0

2006

4.0

2007

0.0

2005

0.0

2006

0.0

2010

7.0

1999

0.0

1994

7.0

1999

0.0

2004

6.5

1971

6.4

1970

6.2

2009

4.1

2001

4.4

1978

5.5

2005

4.6

2002

8.6

1992

3.4