A report prepared by the Homelessness Research Institute of the National Alliance to End Homelessness measures efforts to end homelessness by establishing a baseline number of homeless people from which to monitor trends in homelessness. As the first effort to count homeless populations nationwide in ten years, Research Reports on Homelessness: Homelessness Counts (48 pages, PDF) found that Washington D.C. and several states had high rates of homelessness, including California, Rhode Island, Nevada, Washington, Colorado, Hawaii, Oregon, Idaho, and Alaska.