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Unknown/refused

SELECT ALL
2011
2012
2013
2014
2015
2016
2017
2018
Unknown/refused - Total
(Percent)

Unknown/refused - Total

(Percent)
Year Data Set 20112012201320142015201620172018
Unknown/refused
DC0.3 %0.3 %1.0 %0.4 %0.6 %0.1 %0.3 %0.9 %