2002

5.4

2003

6.3

2006

6.5

2005

6.1

1940

7.1

2013

6.4

2016

7.2

2006

6.0

2012

6.0

2009

6.6

2010

7.3

1998

5.5

2006

5.5

2007

5.6

1995

5.9

2011

5.7

1990

7.5

1998

6.6

2017

6.9

2011

5.8