| | Ratio function | | | | | | | | Imp. (%) |
| | Linear | — | 2 | 90.7 | 7165 | 92.3 | 8782 | 8761 | 24.1% | | — | 1.8 | 85.3 | 6795 | 87.9 | 8267 | 8137 | 15.3% | | — | 1.5 | 80.7 | 6528 | 83.5 | 7657 | 7275 | 3.1% |
| | Two-segment | 6 | 2 | 90.7 | 7165 | 92.3 | 8782 | 8761 | 24.1% | | 5 | 1.8 | 85.3 | 6795 | 87.9 | 8267 | 8137 | 15.3% | | 7 | 1.4 | 79.4 | 6678 | 82.4 | 7496 | 6628 | −6.1% |
| | Exponential | 1.2 | 1.9 | 79.5 | 6530 | 81.9 | 7404 | 6852 | −2.9% | | 1.7 | 2.1 | 79.2 | 6557 | 81.4 | 7323 | 6691 | −5.2% | | 1.2 | 0.8 | 80.8 | 6530 | 84.1 | 7715 | 7301 | 3.4% | | 0 | 2 | 80.8 | 6530 | 83.8 | 7700 | 7301 | 3.4% |
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