1996

8.0

2014

4.5

2016

6.7

2020

6.3

2005

6.1

1981

5.7

1983

3.8

2010

1.0

2013

10.0

2015

9.0

1977

5.3

2015

0.0

2009

5.8

2007

5.3

1991

7.7

2008

7.4

2000

6.6

2007

6.6

2013

5.3

1999

0.0