2013

7.6

2014

6.8

2011

7.1

1967

7.7

1995

6.1

2007

10.0

2008

7.8

2012

6.4

2004

7.2

2018

7.0

2017

7.7

1924

7.3

1962

7.9

2008

7.1

2010

6.6

1895

5.6

2009

7.5

2015

7.4

2014

5.7