1. EIA. Commercial buildings energy consumption survey (CBECS), in User’s Guide to the 2012 CBECS Public Use Microdata File. U.S. Energy Information Administration; 2015.
2. Census Bureau, U.S., Historical National Population Estimates: July 1, 1900 to July 1, 1999. United States Census Bureau United States Census Bureau; 2000.
3. Census Bureau, U.S. Census Bureau Projects U.S. Population of 312.8 Million on New Year's Day; 2011 [cited 2020 May 06, 2020]; Available from: https://www.census.gov/newsroom/releases/archives/population/cb11-219.html.
4. Doe US. An assessment of energy technologies and research opportunities. Quadrennial Technology Review. United States Department of Energy; 2015.
5. Baldwin S, Bindewald G, Brown A, Chen C, Cheung K, Clark C et al. Quadrennial technology review: An assessment of energy technologies and research Opportunities. Technical Report, US Department of Energy, Washington DC; 2015.