1996

5.4

2009

5.9

2001

6.9

1988

7.0

2002

6.5

2009

7.4

2018

0.0

2007

4.2

1983

4.7

1992

7.6

2008

6.1

1995

5.9

2020

8.1

2006

5.3

1997

4.5

2016

0.5

2018

0.0

2011

5.8

2015

7.0

2010

7.5