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Percentage of the population reporting 'German' ancestry (%):
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| 21.9% | 24.0% | 26.0% | 28.0% | 30.0% | 32.1% |
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Percentage of the population reporting 'American' ancestry (%):
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| 15.68% | 16.10% | 16.51% | 16.93% | 17.34% | 17.76% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 6.7% | 8.0% | 9.2% | 10.4% | 11.7% | 13.0% |
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Percentage of the population reporting 'English' ancestry (%):
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Percentage of the population reporting 'Swiss' ancestry (%):
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Percentage of the population reporting 'Scottish' ancestry (%):
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| 1.75% | 1.84% | 1.92% | 2.00% | 2.09% | 2.17% |
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Percentage of the population reporting 'Dutch' ancestry (%):
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| 2.20% | 2.36% | 2.52% | 2.69% | 2.85% | 3.01% |
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Percentage of the population reporting 'Italian' ancestry (%):
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Percentage of the population reporting 'Polish' ancestry (%):
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Percentage of the population reporting 'Pennsylvania German' ancestry (%):
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Percentage of the population reporting 'Scotch-Irish' ancestry (%):
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| 0.47% | 0.56% | 0.65% | 0.75% | 0.84% | 0.93% |
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Percentage of the population reporting 'Russian' ancestry (%):
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| 0.00% | 0.19% | 0.38% | 0.57% | 0.75% | 0.95% |
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Percentage of the population reporting 'European' ancestry (%):
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| 0.31% | 0.43% | 0.55% | 0.67% | 0.79% | 0.91% |
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Percentage of the population reporting 'French' ancestry (%):
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| 0.62% | 0.87% | 1.12% | 1.37% | 1.61% | 1.86% |
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Percentage of the population reporting 'Ukrainian' ancestry (%):
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| 0.00% | 0.09% | 0.18% | 0.27% | 0.36% | 0.45% |
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Percentage of the population reporting ' Mexican' ancestry (%):
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| 1.9% | 3.9% | 6.0% | 8.0% | 10.1% | 12.2% |
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Percentage of the population reporting ' Spaniard' ancestry (%):
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| 0.00% | 0.11% | 0.21% | 0.32% | 0.43% | 0.54% |
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Percentage of the population reporting ' Puerto Rican' ancestry (%):
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| 0.00% | 0.06% | 0.11% | 0.17% | 0.23% | 0.29% |
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Percentage of the population reporting 'Mixed' ancestry (%):
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| 0.000% | 0.046% | 0.093% | 0.139% | 0.185% | 0.232% |
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Percentage of the population reporting 'Chinese' ancestry (%):
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| 0.000% | 0.017% | 0.033% | 0.050% | 0.066% | 0.083% |
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