1992

4.0

1981

5.2

2010

6.5

1999

6.0

2018

0.0

2001

4.5

2005

5.7

1998

3.5

2016

6.6

2007

7.0

1991

5.7

2013

6.0

1986

0.0

2012

8.0

2011

5.1

1971

6.4

1987

0.0

2007

5.0

2000

0.0

2012

6.4

2014

5.7