2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
46.0
48.0
50.0
52.0
54.0
56.0
58.0
60.0
62.0
64.0
66.0
68.0
70.0
72.0
74.0
76.0
78.0
80.0
82.0
84.0
86.0%
Overall
Community colleges
Public four-year colleges
Private, nonprofit four-year colleges
For-profit four-year colleges
