2004

5.2

2012

6.7

2009

4.0

2004

4.8

2005

0.0

1991

6.2

2007

5.0

1999

2.0

1996

6.8

2007

4.7

2018

7.6

2015

7.2

1998

6.2

1995

5.3

2008

6.8

1993

4.5

2003

5.3