2001

7.8

1997

0.0

2005

7.7

2008

6.6

1995

7.3

1994

3.5

2005

7.5

2013

7.1

2012

4.6

2003

7.2

2012

6.9

1999

6.0

2010

6.0

2003

7.8

1993

8.4