2004

4.6

1998

8.3

1988

5.0

2006

5.7

1996

4.0

2012

0.0

1994

6.4

1986

5.1

1987

0.0

1992

7.0

1998

6.0

1997

7.5

2005

6.7

1992

0.0

1986

6.7

1997

6.5

2016

8.2

2008

6.2

1991

6.2

1993

8.1

2015

2.3

1998

6.9

1990

6.9

2002

5.9

1993

0.0

1996

0.0