2017 7.3

2003 7.9

2007 7.1

2005 6.5

2009 7.6

2018 6.7

2014 6.0

1990 7.1

2008 6.7

2004 6.6

2018 6.8

2018 6.5

2017 5.4

2012 6.6

2012 7.2

1996 8.1

2016 7.0

2004 6.1

2016 6.9

2004 7.8