Table 1. Eigenvalues and explicable variation.

Factor	Original eigenvalue of factor			Cumulative load of extracted factor
	All eigenvalues	Variation(%)	Cumulative contribution rate (%)	All eigenvalues	Variation (%)	Contribution rate (%)
1	3.667	52.389	52.389	3.214	45.918	45.918
2	0.962	13.743	66.132
3	0.824	11.776	77.908
4	0.535	7.648	85.557
5	0.426	6.092	91.649
6	0.352	5.023	96.672
7	0.233	3.328	100.00