2006

6.4

2012

5.6

1989

4.9

2002

6.1

1996

5.7

2007

7.5

1996

5.9

1992

7.0

2010

10.0

2011

0.0

2003

6.0

1990

7.4

1999

7.9

1990

6.0

2000

6.6

1997

5.3

2000

0.0

1993

6.9

2004

7.0

1999

8.7

2009

7.6

1997

5.1