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Four or more

SELECT ALL
2011
2012
2013
2014
2015
2016
2017
2018
Four or more - Total
(Percent)

Four or more - Total

(Percent)
Year Data Set 20112012201320142015201620172018
Four or more
DC3.4 %3.7 %4.6 %4.4 %3.7 %4.5 %3.0 %4.5 %