2006

6.5

2008

7.4

1995

5.9

2000

5.4

2011

6.1

2015

7.0

2002

6.3

2007

3.9

2003

6.3

1946

5.8

2012

6.3

2013

6.4

2004

6.6

2009

6.7

2010

7.3

2010

6.0

2011

7.0

1993

6.1

2007

5.6

2003

6.7