1918

6.8

2003

6.7

2017

6.0

2018

7.2

2014

7.1

1999

6.4

2013

4.5

2011

6.1

2000

7.1

2010

7.0

2012

7.0

2001

7.5

1999

8.5

1997

6.3

2009

7.5

2006

6.9

2008

5.3

2004

10.0

2018

5.2