ACS Data Series		Release Year 1
	2006	2007	2008	2009	2010	2011	2012
1-Year Estimates	2005 2	2006 3	2007	2008	2009	2010	2011
3-Year Estimates			2005-07	2006-08	2007-09	2008-10	2009-11
5-Year Estimates 4					2005-09	2006-10	2007-11

1 Data collected during preceding calendar year(s).
2 ACS data excludes group quarters population in 2005.
3 ACS data includes group quarters population beginning in 2006.
4 ACS 5-year estimates will include data for census tracts and block groups.