1986

6.7

2006

2.3

2004

7.5

1998

7.8

1986

7.5

2006

6.6

1988

8.0

2000

0.0

1986

6.4

2000

6.0

1994

6.0

1993

5.7

1991

7.3

1988

7.8

2012

0.0

2010

0.0

2009

0.0

2006

0.0

2003

7.0

2003

0.0