Performance Evaluation of China's Basic Pension Insurance Based on a Three-Stage Superefficient SBM-DEA Model

Table 5

Dagum Gini coefficient and its decomposition results.

Years	Interregional Gini coefficient			Regional Gini coefficient			Contribution rate (%)
	East	Central	West	East	Central	West
2016	0.299	0.327	0.179	0.225	0.136	0.207	27.17	58.62	14.22
2017	0.350	0.361	0.213	0.229	0.209	0.200	26.08	57.80	16.12
2018	0.338	0.308	0.261	0.257	0.295	0.203	29.76	40.15	30.09
2019	0.236	0.237	0.234	0.144	0.227	0.235	29.19	37.52	33.29
2020	0.208	0.229	0.202	0.156	0.189	0.201	29.72	37.84	32.44