| First principal component | Second principal component | Third principal component | Fourth principal component | Fifth principal component |
Eigenvalue | 3.429 | 0.857 | 0.567 | 0.126 | 0.021 |
Contribution rate | 68.580% | 17.135% | 11.344% | 2.529% | 0.412% |
Cumulative Contribution rate | 68.580% | 85.715% | 97.059% | 99.588% | 100.000% |