2005 6.9

2011 6.6

2006 6.2

2015 5.7

2015 6.1

2007 6.3

2015 6.4

2003 7.2

2015 4.8

2012 7.1

2016 6.1

2009 6.6

2007 7.5

2003 7.2

2015 6.6

2011 7.7

2007 6.3

2015 6.3

2014 4.3

2013 6.8

2015 7.1

1960 7.9

1993 7.7

2007 7.9

2014 5.3

2011 6.7

2016 4.3

2015 5,8

2012 8.2

2016 6.2