1998

6.2

1995

5.8

2010

9.0

2001

5.2

1995

4.0

2005

7.7

2004

0.0

2000

4.2

1997

6.5

1991

6.4

2004

8.0

1992

0.0

1994

6.3

2000

6.4

2008

6.6

1996

6.6

1996

6.0