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Percentage of the population reporting 'German' ancestry (%):
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| 21.3% | 22.9% | 24.4% | 25.9% | 27.5% | 29.0% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 9.8% | 10.4% | 10.9% | 11.4% | 11.9% | 12.5% |
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Percentage of the population reporting 'English' ancestry (%):
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| 7.8% | 8.5% | 9.2% | 9.9% | 10.6% | 11.4% |
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Percentage of the population reporting 'American' ancestry (%):
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| 12.91% | 13.17% | 13.43% | 13.68% | 13.94% | 14.21% |
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Percentage of the population reporting 'Dutch' ancestry (%):
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| 1.93% | 2.24% | 2.55% | 2.86% | 3.17% | 3.49% |
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Percentage of the population reporting 'Polish' ancestry (%):
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| 1.69% | 1.79% | 1.89% | 1.99% | 2.09% | 2.19% |
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Percentage of the population reporting 'Scottish' ancestry (%):
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| 1.02% | 1.30% | 1.57% | 1.84% | 2.11% | 2.38% |
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Percentage of the population reporting 'Swedish' ancestry (%):
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| 0.25% | 0.50% | 0.74% | 0.99% | 1.23% | 1.48% |
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Percentage of the population reporting 'Italian' ancestry (%):
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| 1.56% | 1.74% | 1.92% | 2.09% | 2.26% | 2.44% |
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Percentage of the population reporting 'European' ancestry (%):
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| 0.62% | 0.71% | 0.79% | 0.87% | 0.95% | 1.04% |
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Percentage of the population reporting 'French' ancestry (%):
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| 1.29% | 1.44% | 1.59% | 1.74% | 1.89% | 2.04% |
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Percentage of the population reporting 'Swiss' ancestry (%):
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| 0.40% | 0.50% | 0.60% | 0.69% | 0.78% | 0.88% |
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Percentage of the population reporting 'British' ancestry (%):
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| 0.00% | 0.18% | 0.35% | 0.53% | 0.70% | 0.88% |
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Percentage of the population reporting 'Greek' ancestry (%):
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| 0.05% | 0.30% | 0.55% | 0.80% | 1.04% | 1.29% |
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Percentage of the population reporting 'Norwegian' ancestry (%):
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| 0.07% | 0.50% | 0.92% | 1.34% | 1.76% | 2.19% |
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Percentage of the population reporting ' Mexican' ancestry (%):
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Percentage of the population reporting ' Puerto Rican' ancestry (%):
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| 0.00% | 0.15% | 0.30% | 0.45% | 0.60% | 0.76% |
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Percentage of the population reporting ' Cuban' ancestry (%):
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| 0.00% | 0.05% | 0.10% | 0.15% | 0.21% | 0.26% |
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Percentage of the population reporting 'Korean' ancestry (%):
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| 0.00% | 0.26% | 0.52% | 0.78% | 1.05% | 1.31% |
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Percentage of the population reporting 'Indian' ancestry (%):
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| 0.000% | 0.026% | 0.052% | 0.077% | 0.103% | 0.130% |
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