2016 7.1

2013 8.2

2003 6.8

1993 4.0

2015 5.1

2009 5.6

2002 5.2

2016 6.1

2015 6.2

2007 6.3

2011 4.4

2016 5.2

2013 7.4

2015 7.7

1990 6.9

2016 4.3

2011 5.8

2015 6.8

2017 6.5

2016 7.0

2013 5.8

2016 6.1

2016 6.0

1991 7.1

2007 6.5

1986 7.2

1992 7.2

2017 5.3

2018 5.9

2018 6.3