 For example, tribes used some grant money to rehabilitate existing housing units and construct new units.According to a Government Accountability Office (GAO) study, "During fiscal years 2003 through 2008, NAHASDA grantees collectively used IHBG funds to build 8,130 homeownership and 5,011 rental units; acquire 3,811 homeownership and 800 rental units; and rehabilitate 27,422 homeownership and 5,289 rental units".With regard to alleviating poverty and making housing more affordable for Native Americans, tribes could use grants for various housing assistance programs.