1997

6.6

2003

7.9

2006

7.1

2009

8.0

2000

7.6

1993

7.7

2004

8.6

2003

6.4

2002

7.9

2005

7.7

2003

7.6

2011

7.6

2015

7.5

2008

5.5

2022

0.0