2016

6.3

2017

5.4

1995

8.0

2008

7.3

1996

6.2

1995

7.9

2007

6.7

2003

8.2

1988

0.0

1998

0.0

2002

2.5

2011

8.2

2012

5.7

1983

6.1

2009

6.9

2004

9.0

1988

6.2