1997

6.6

1997

6.6

1989

5.9

1995

5.4

2006

0.0

1998

3.7

2002

9.1

1996

2.0

2008

7.5

2007

6.5

1998

6.5

2004

6.3

1995

6.9

1987

7.7

1998

5.0

2008

0.0

2010

0.0

2015

4.6

2003

4.4

1996

5.7

2007

2.8

2000

2.0