2001

6.9

2022

5.6

2011

6.6

1999

4.8

2016

5.5

2010

6.5

2007

5.8

2007

5.0

2000

7.0

1997

10.0

2006

7.3

2017

7.3

2009

5.0

2010

1.0

2014

6.0

2001

5.0