2012

5.5

1998

7.2

1996

3.5

1995

4.6

1994

7.8

1990

5.3

2007

5.9

2006

0.0

1992

4.0

2004

6.3

1989

6.9

2009

7.4

2009

0.0

2000

7.1

2003

7.2

2011

6.5

1987

3.5

1992

4.4

2020

0.0