1983

7.1

2013

3.5

2012

0.0

2003

1.6

1982

6.7

1999

6.8

1989

6.0

2018

5.9

2001

6.5

2006

5.8

2016

7.0

1994

4.6

1992

5.3

2013

6.3

2003

5.1

2001

7.3

1994

6.2

2014

7.0

2008

5.1

2015

7.3