2010

6.2

2009

3.5

2000

7.6

2000

5.3

2004

5.9

1998

7.3

2005

7.1

1990

7.4

1999

7.9

2003

7.8

2008

5.5

2002

6.1

2007

0.0

1994

7.1

2009

5.5

1999

5.6

2007

6.8

2002

7.3