Evolution of the Efficiency of Nationwide Commercial Banks in China Based on an SBM-Undesirable Model and DEA Window Analysis

Table 3

ABC efficiency SBM-undesirable model and window analysis results.

	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017
Window1	0.607	0.604	0.663
Window2		0.533	0.591	0.683
Window3			0.518	0.598	0.596
Window4				0.581	0.574	0.582
Window5					0.559	0.568	0.613
Window6						0.504	0.543	0.534
Window7							0.543	0.534	0.470
Window8								0.534	0.470	0.507
Mean	0.607	0.569	0.591	0.621	0.576	0.551	0.566	0.534	0.470	0.507