2016

5.7

1995

5.1

1987

5.6

2000

6.6

2010

4.2

2007

6.9

2009

5.9

2001

7.1

2004

5.0

2008

6.5

1995

6.3

2002

5.4

1989

0.0

2002

9.3

1999

5.6

2007

7.5

2008

6.3

2002

6.0

1998

6.6

2005

6.8