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Percentage of the population reporting 'American' ancestry (%):
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| 20.48% | 20.61% | 20.74% | 20.86% | 20.98% | 21.11% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 12.5% | 13.6% | 14.7% | 15.9% | 17.0% | 18.1% |
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Percentage of the population reporting 'English' ancestry (%):
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| 7.8% | 8.8% | 9.8% | 10.8% | 11.8% | 12.8% |
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Percentage of the population reporting 'German' ancestry (%):
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| 6.35% | 6.71% | 7.06% | 7.42% | 7.77% | 8.13% |
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Percentage of the population reporting 'Scottish' ancestry (%):
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Percentage of the population reporting 'Scotch-Irish' ancestry (%):
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| 1.13% | 1.46% | 1.79% | 2.11% | 2.43% | 2.76% |
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Percentage of the population reporting 'Dutch' ancestry (%):
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| 0.64% | 1.11% | 1.57% | 2.02% | 2.48% | 2.95% |
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Percentage of the population reporting 'French' ancestry (%):
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| 0.61% | 0.92% | 1.21% | 1.51% | 1.81% | 2.11% |
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Percentage of the population reporting 'European' ancestry (%):
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| 0.20% | 0.40% | 0.59% | 0.78% | 0.97% | 1.16% |
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Percentage of the population reporting 'Polish' ancestry (%):
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| 0.25% | 0.32% | 0.39% | 0.45% | 0.51% | 0.58% |
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Percentage of the population reporting 'Italian' ancestry (%):
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| 0.02% | 0.16% | 0.29% | 0.43% | 0.56% | 0.70% |
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Percentage of the population reporting 'Norwegian' ancestry (%):
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| 0.000% | 0.046% | 0.093% | 0.139% | 0.186% | 0.233% |
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Percentage of the population reporting 'Austrian' ancestry (%):
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| 0.000% | 0.036% | 0.072% | 0.108% | 0.144% | 0.181% |
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Percentage of the population reporting 'Russian' ancestry (%):
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| 0.000% | 0.036% | 0.072% | 0.108% | 0.144% | 0.181% |
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Percentage of the population reporting 'Danish' ancestry (%):
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| 0.000% | 0.043% | 0.086% | 0.129% | 0.172% | 0.215% |
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Percentage of the population reporting ' Mexican' ancestry (%):
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Percentage of the population reporting ' Cuban' ancestry (%):
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| 0.00% | 0.15% | 0.31% | 0.46% | 0.62% | 0.78% |
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Percentage of the population reporting ' Central American' ancestry (%):
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| 0.00% | 0.19% | 0.38% | 0.57% | 0.76% | 0.95% |
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Percentage of the population reporting ' Guatemalan' ancestry (%):
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| 0.00% | 0.19% | 0.38% | 0.57% | 0.76% | 0.95% |
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Percentage of the population reporting ' Puerto Rican' ancestry (%):
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| 0.000% | 0.042% | 0.083% | 0.125% | 0.167% | 0.209% |
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Percentage of the population reporting 'Korean' ancestry (%):
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| 0.000% | 0.043% | 0.086% | 0.129% | 0.172% | 0.215% |
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