Table 6.

The Outcomes of the GRA-GCI for Air Quality, CO₂, Energy, and overall sustainability ranking. Prepared by the Authors.

Assessment Period	Overall Sustainability		Air Quality		CO2		Energy
	Grade	Rank	Grade	Rank	Grade	Rank	Grade	Rank
2010	0.3127	1	0.1861	2	0.2632	1	0.2500	1
2011	0.2868	2	0.1809	3	0.2190	3	0.2245	2
2012	0.2550	3	0.1922	1	0.1675	4	0.1449	3
2013	0.2048	5	0.1321	4	0.1635	5	0.1166	4
2014	0.2040	6	0.1320	5	0.1247	7	0.0950	6
2015	0.1641	9	0.0816	8	0.1100	9	0.0850	9
2016	0.1709	8	0.0700	9	0.1208	8	0.0872	8
2017	0.1740	7	0.0916	7	0.1511	6	0.0907	7
2018	0.2132	4	0.0921	6	0.2379	2	0.0960	5