1990

8.3

1995

6.2

2000

6.5

2003

8.0

2005

8.3

2009

6.5

2007

7.0

2015

6.6

2014

6.7

2010

7.0

1992

8.2

2019

7.5

2006

7.3

2004

6.2

2002

5.9

1992

8.3

2013

7.0

2024

0.0

2000

6.2

2005

7.5