2009

8.7

2011

8.3

2018

7.0

1990

8.0

2004

7.6

2016

8.6

2009

8.3

2003

7.9

2018

8.2

2005

5.7

2006

8.4

2009

7.0

1951

6.4

2015

8.1

2013

5.4

1992

8.5

1998

7.6

2008

6.0

2010

7.5

2015

7.0