“…Data for metropolitan disparities, interlocal cooperation, state aid, and federal aid are collected from the Census of Governments of 1982Governments of , 1992Governments of , 2002Governments of , and 2012 Control variables account for demographic characteristics underlying demand for services. Basic control variables include median income, population, population squared, fraction of residents aged under 18 years, and fraction of residents aged 65 and over (Alesina, Baqir, and Easterly 1999 ;Jimenez 2014 ). Data for these variables are collected from the Census of Population of 1980, 1990, 2000, and 2010, and the 2008-12 American Community Survey estimate for income.…”