Table 3.

Total variance explained.

	Initial eigenvalues			Rotation sums of squared loadings
Component	Total	% of variance	Cumulative %	Total	% of variance	Cumulative %
1	2.753	19.668	19.668	2.206	15.760	15.760
2	2.018	14.411	34.078	1.905	13.608	29.368
3	1.818	12.988	47.066	1.729	12.352	41.720
4	1.573	11.235	58.301	1.625	11.610	53.330
5	1.140	8.141	66.442	1.500	10.716	64.046
6	0.935	6.681	73.123	1.271	9.077	73.123
7	0.768	5.484	78.607
8	0.637	4.553	83.160
9	0.571	4.080	87.240
10	0.466	3.331	90.572
11	0.417	2.979	93.551
12	0.378	2.700	96.250
13	0.347	2.476	98.726
14	0.178	1.274	100.000

Cumulative %, cumulative contribution rate at which the first six principal components was 73.123%.