1997

7.0

1999

0.0

2007

5.6

1999

5.4

1994

7.3

2003

6.9

2001

2.4

1995

6.2

1985

6.7

2003

0.0

1999

7.1

2006

8.2

2003

0.0

2009

5.7

1992

6.3