2006

8.3

1997

6.1

2003

4.8

2004

7.1

2001

6.2

2003

6.4

2003

6.1

1992

6.7

2000

7.2

1992

0.0

2012

6.8

1993

6.5

2005

6.2

1997

6.0

1999

6.7

2000

6.7

2002

2.5

2002

7.0

2000

5.7

2004

9.0

2001

6.6

2002

6.8

2001

7.4