2006

5.5

2005

0.0

2016

2.0

2016

0.0

2001

7.4

2000

7.7

2007

4.5

2014

6.2

1998

8.0

2003

6.3

2002

2.0

2015

6.1

2009

3.7

1999

5.6

2012

5.4

1970

6.2

2005

4.2

2008

4.6