2007

6.0

2002

6.7

2007

6.2

2004

6.7

2000

4.7

2000

6.8

2001

7.8

1988

7.2

1992

6.5

1995

6.4

2002

7.1

1980

0.0

2004

0.0

2001

6.8

2004

5.8

2016

7.8

2017

7.6

2016

6.6

2008

5.7

2002

9.1