The Formation and Evolution of Interorganisational Business Networks in Megaprojects: A Case Study of Chinese Skyscrapers

Table 4

Organisations of the first-tier degree centrality (top 3) each year.

	2006	2008	2009	2010	2011	2012	2013	2014	2015
All organizations	D2021048	D2021048	D2021048	D2021048	D2021048	D2021048	D2021048	D2021048	C3091077
	C3021044	C3021044	C3021044	C3021044	C3021044	C3021044	C3021044	C3091077	D2021048
		C4024138	D2254117	D2254117	D2254117	D2254117	D2254117	C4012083	C4012083
Design firm	D2021048	D2021048	D2021048	D2021048	D2021048	D2021048	D2021048	D2021048	D2021048
			D2254117	D2254117	D2254117	D2254117	D2254117	D2254159	D2254159
				D2254159	D2254159	D2254159	D2254159	D2254117	D2254117
Contractor	C3021044	C3021044	C3021044	C3021044	C3021044	C3021044	C3021044	C3091077	C3091077
		C4024138	C4024138	C4024138	C4012083	C4012083	C4012083	C4012083	C4012083
			C4021056	C4021056	C4052098	C4052098	C4052098	C3021044	C3021044
Supervisor	—	—	S5022047	S5022047	S5022047	S5022047	S5022047	S5022047	S5022047
						S5031025	S5021045	S5021045	S5021045

Note. (1) The number of organisations in the first tier may be less than three when only one (or two) organization repeatedly occupied the top list. (2) See Table 5 for the company names of the organisations.