1993

4.8

2006

0.0

1997

5.8

1992

0.0

2002

5.0

2004

6.4

1985

0.0

2004

6.0

2018

10.0

2001

6.3

2003

7.0

2012

5.2

2004

2.9

2011

6.1

2005

6.9

1995

5.6