1993

8.2

2004

7.5

2001

7.7

2008

7.2

1998

7.2

2008

7.6

2008

6.7

2011

6.4

2008

7.4

2001

6.6

2006

5.4

1993

6.3

2018

6.6

1996

5.4

1997

7.3

2023

6.5

2000

9.7

2005

7.1

2014

4.9

2013

7.4