1990

6.5

1989

8.1

1988

5.3

2006

5.8

2006

6.8

2002

10.0

1998

6.0

2004

5.0

2000

6.2

2006

7.5

2002

0.0

2010

6.6

1996

8.2

2013

5.5

2002

0.0

2008

0.0

2000

5.6

2005

0.0

2008

7.5

2006

6.1

1990

4.0

2009

6.9

1989

6.7

1993

9.0

1996

4.8

2001

5.1

2005

0.0

1988

6.9

2001

6.4

1994

7.0

1994

5.7

1982

9.8

1989

5.0

2007

4.8

1992

3.0