Quarter Persons, Seasonally Adjusted 2006-01-01 14776771.946693900 2006-04-01 15028275.495111100 2006-07-01 15157266.056449700 2006-10-01 15396886.501745202 2007-01-01 15426422.900453200 2007-04-01 15402020.018241700 2007-07-01 15507638.296616700 2007-10-01 15420618.784688400 2008-01-01 15638342.319112500 2008-04-01 15830489.522156500 2008-07-01 15913816.950421800 2008-10-01 15824751.208309200 2009-01-01 15596075.594821101 2009-04-01 15743559.841374101 2009-07-01 16001067.187379900 2009-10-01 16337397.376424901 2010-01-01 16654164.911177800 2010-04-01 16878754.366321800 2010-07-01 16995024.287086997 2010-10-01 17295456.435413400 2011-01-01 17735498.813256700 2011-04-01 17868125.211785197 2011-07-01 18187620.049318900 2011-10-01 18189155.925639200 2012-01-01 18280094.693527600 2012-04-01 18563741.147076797 2012-07-01 18706156.730088796 2012-10-01 19042307.429306902 2013-01-01 19126482.367843002 2013-04-01 19180824.650459398 2013-07-01 19162663.928422800 2013-10-01 19309729.053274803 2014-01-01 19253780.411892500 2014-04-01 19289280.067967102 2014-07-01 19344795.422153500 2014-10-01 19399144.097986800 2015-01-01 19587045.385097000 2015-04-01 19678878.160248600 2015-07-01 19818308.646955800 2015-10-01 19943167.807698600 2016-01-01 20053204.493636400 2016-04-01 20130720.638235500 2016-07-01 20112786.057904903 2016-10-01 20206188.810223200 2017-01-01 20464345.021124900 2017-04-01 20743429.459075302 2017-07-01 21018695.958283197 2017-10-01 21138629.561516598 2018-01-01 21225457.641580097 2018-04-01 21080254.607432700