1945

7.2

2015

6.7

1942

7.0

2002

8.0

2013

6.9

1999

8.5

2014

6.3

2008

6.5

2014

8.0

2012

7.3

2015

7.9

2010

7.1

2019

8.1

2019

8.2

2001

7.9

2017

7.6

1997

8.4

2009

8.2

2006

7.0

2013

7.8