1985

8.5

2007

8.0

2011

2.8

1980

7.5

1984

0.0

2011

0.0

2016

6.8

1982

4.9

2004

5.8

2005

2.4

2006

0.0

1983

0.0

1990

7.5

2003

0.0

2006

0.0

1977

7.0

1981

7.0

2005

1.7

2009

4.6

2007

6.2

2019

6.9

2008

0.0

1985

6.5