Analyzing the Evolution and the Future of the Internet Topology Focusing on Flow Hierarchy

Table 6

Mean number of ASes contained in one module.

Year	CL1	CL2	CL3	CL4	CL5	CL6
2000	224.97	24.78	8.41	4.01	3.22	2
2002	424.32	35.73	9.81	4.32	3.35	2.75
2004	414.07	37.84	10.41	4.67	3.59	3.5
2006	528.33	43.54	11.25	5.43	3.59	2
2008	695.98	57.18	12.20	6.20	3.71	2
2010	841.98	69.16	12.26	5.71	3.81	2.17
2012	915.93	73.31	12.93	6.36	3.74	2.89