1991

10.0

2006

6.2

2002

0.0

1975

4.2

2007

6.0

1993

0.0

2018

5.8

2012

3.0

2014

3.0

2006

0.0

2013

2.0

2005

6.0

2014

0.0

1981

5.9

2004

7.6

2008

5.0

2009

5.0