The Study of the Spatial Heterogeneity and Structural Evolution of the Producer Services Trade Network

Table 3

Characteristic statistics of the overall network of producer services trade.

Year	Number of edges	Network density	Average degree	Average path length	Average clustering coefficient
2000	509	0.28	16.68	1.74	0.55
2004	658	0.36	21.57	1.64	0.61
2008	857	0.47	28.09	1.53	0.70
2012	892	0.49	29.25	1.51	0.71