2009

8.0

2007

7.5

2002

8.1

2016

7.2

2004

9.1

2004

7.3

2000

6.9

2014

6.7

2019

7.0

2013

7.5

2002

7.5

2005

8.6

2019

7.3

1970

6.1

1985

6.8

2015

7.6

2014

6.6

2008

7.3

2008

7.6

2010

7.4