1996

4.2

1998

0.0

1995

5.4

2005

8.2

1995

3.3

2008

7.4

2013

0.0

2006

7.5

1995

7.3

1997

7.6

2003

7.6

2012

6.0

2012

7.2

2008

8.4

1994

7.1

2015

6.5