2004

5.2

2012

6.7

2009

3.0

2004

4.0

2005

0.0

1991

6.1

2007

5.3

1999

2.0

1996

5.6

2007

4.8

2018

7.2

2015

7.5

1998

6.2

1995

5.3

2008

6.1

1993

4.5

2003

5.0