2000

0.0

2002

6.4

1992

5.0

2008

6.8

1989

6.0

2004

3.8

1991

5.8

2011

5.1

1998

5.8

2017

3.0

2006

0.0

1977

4.1

2015

4.6

2009

6.0

2017

6.7

1998

0.0