2001

6.7

2001

6.2

2003

7.8

2005

7.6

2001

7.2

2002

7.7

2004

7.3

1994

7.8

1995

6.9

2000

8.5

2003

8.1

2001

8.1

2008

6.4

2004

6.7

2005

7.5