Optimization of Crude Oil Trade Structure: A Complex Network Analysis

Table 1

Numbers of crude oil trading countries from 2010 to 2016.

	2010	2011	2012	2013	2014	2015	2016
Net exporters	47	48	51	48	52	44	43
Net importers	100	103	98	99	101	99	95
Total	147	151	149	147	153	143	138