2004

5.7

1995

7.3

1989

6.2

1990

0.0

1991

0.0

2010

5.9

2012

10.0

1999

6.5

2010

5.2

2012

6.0

2005

8.0

1988

5.3

2006

8.0

2013

6.8

0.0