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Percentage of the population reporting 'German' ancestry (%):
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| 21.0% | 22.9% | 24.7% | 26.5% | 28.3% | 30.2% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 12.8% | 14.2% | 15.5% | 16.9% | 18.2% | 19.6% |
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Percentage of the population reporting 'English' ancestry (%):
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| 6.5% | 7.8% | 9.0% | 10.1% | 11.3% | 12.6% |
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Percentage of the population reporting 'American' ancestry (%):
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Percentage of the population reporting 'Swedish' ancestry (%):
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Percentage of the population reporting 'Scandinavian' ancestry (%):
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Percentage of the population reporting 'Scottish' ancestry (%):
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| 2.03% | 2.51% | 2.98% | 3.46% | 3.93% | 4.41% |
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Percentage of the population reporting 'French' ancestry (%):
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Percentage of the population reporting 'Polish' ancestry (%):
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Percentage of the population reporting 'Italian' ancestry (%):
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| 2.7% | 4.6% | 6.6% | 8.5% | 10.4% | 12.4% |
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Percentage of the population reporting 'Scotch-Irish' ancestry (%):
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| 0.91% | 1.27% | 1.63% | 1.98% | 2.34% | 2.70% |
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Percentage of the population reporting 'Norwegian' ancestry (%):
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Percentage of the population reporting 'Finnish' ancestry (%):
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| 0.00% | 0.17% | 0.34% | 0.51% | 0.68% | 0.86% |
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Percentage of the population reporting 'Swiss' ancestry (%):
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| 0.00% | 0.31% | 0.62% | 0.93% | 1.24% | 1.55% |
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Percentage of the population reporting 'Slovak' ancestry (%):
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| 0.00% | 0.29% | 0.58% | 0.87% | 1.16% | 1.46% |
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Percentage of the population reporting ' Mexican' ancestry (%):
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Percentage of the population reporting ' Spanish' ancestry (%):
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| 0.00% | 0.42% | 0.85% | 1.27% | 1.69% | 2.12% |
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Percentage of the population reporting ' Cuban' ancestry (%):
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| 0.00% | 0.07% | 0.15% | 0.22% | 0.29% | 0.37% |
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Percentage of the population reporting 'Japanese' ancestry (%):
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| 0.18% | 0.30% | 0.42% | 0.54% | 0.66% | 0.78% |
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Percentage of the population reporting 'Chinese' ancestry (%):
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| 0.27% | 0.62% | 0.97% | 1.31% | 1.66% | 2.01% |
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Percentage of the population reporting 'Cambodian' ancestry (%):
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| 0.000% | 0.043% | 0.086% | 0.128% | 0.171% | 0.214% |
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Percentage of the population reporting 'Indian' ancestry (%):
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| 0.00% | 0.22% | 0.44% | 0.67% | 0.89% | 1.12% |
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