6B: Percent of Income Needed to Pay for College (Source: Measuring up 2006: State-By-State Report Card for Higher Education). Current Public Universities (2006): Oklahoma 24%, Nation 31%. Current Public Community Colleges (2006): Oklahoma 22%, Nation 24%. Baseline Public Universities (1999): Oklahoma 21%, Nation, 19%. Baseline Public Community Colleges (1999): Oklahoma 18%, Nation 17%.