Table 1.

Principal Component Analysis Results.

Principal Component	Contribution Rate (%)	Cumulative Contribution Rate (%)
1	21.93	21.93
2	9.00	30.93
3	7.03	37.97
4	6.41	44.37
5	4.38	48.75
6	3.34	52.08
7	2.84	54.92
8	2.59	57.52
9	2.39	59.90
10	2.14	62.05
11	2.00	64.05