2002

5.8

1981

5.4

1994

6.6

1997

7.5

2014

6.3

2004

7.2

2016

0.0

2008

6.8

2007

7.2

2007

6.4

1980

3.5

2006

6.0

2014

5.1

2018

7.0

8.0

2011

5.2

2007

6.9

1983

6.8

2018

6.9

1986

6.3