1994

7.6

2005

6.8

1985

7.7

2017

5.9

2005

5.4

2001

6.7

2004

7.4

1999

6.7

2002

4.0

2021

7.1

2016

5.8

1997

6.3

2009

6.0

2008

6.2

2009

6.9

2000

5.8

2001

4.0

2010

5.0

2004

9.0