1964

7.4

2013

7.6

2015

6.4

2009

7.3

2019

7.7

2011

7.0

2009

5.3

1993

6.1

2012

9.8

2014

7.2

2004

6.0

2015

6.7

2014

6.2

2016

7.0

2007

6.0

1999

5.0

2010

9.1

1940

7.8

2006

5.5

6.2