2004

5.5

2012

6.7

2009

4.0

2004

4.8

2005

0.0

1991

6.1

2007

5.3

1999

2.0

1996

6.8

2007

4.7

2018

7.6

2015

7.5

1998

6.2

1995

5.3

2008

6.8

1993

4.5

2003

5.6