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Percentage of the population reporting 'American' ancestry (%):
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| 29.3% | 30.5% | 31.7% | 32.9% | 34.1% | 35.3% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 9.28% | 9.51% | 9.74% | 9.97% | 10.20% | 10.43% |
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Percentage of the population reporting 'German' ancestry (%):
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| 6.35% | 6.55% | 6.74% | 6.93% | 7.13% | 7.33% |
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Percentage of the population reporting 'English' ancestry (%):
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| 7.2% | 8.1% | 9.0% | 9.9% | 10.8% | 11.8% |
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Percentage of the population reporting 'Polish' ancestry (%):
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| 0.64% | 0.81% | 0.99% | 1.16% | 1.33% | 1.51% |
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Percentage of the population reporting 'Scotch-Irish' ancestry (%):
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| 1.32% | 1.48% | 1.63% | 1.79% | 1.95% | 2.11% |
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Percentage of the population reporting 'Dutch' ancestry (%):
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| 0.58% | 0.73% | 0.87% | 1.01% | 1.16% | 1.30% |
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Percentage of the population reporting 'Scottish' ancestry (%):
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| 1.28% | 1.35% | 1.42% | 1.49% | 1.55% | 1.63% |
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Percentage of the population reporting 'European' ancestry (%):
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| 0.00% | 0.20% | 0.41% | 0.61% | 0.82% | 1.02% |
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Percentage of the population reporting 'Swedish' ancestry (%):
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| 0.00% | 0.11% | 0.22% | 0.33% | 0.44% | 0.56% |
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Percentage of the population reporting 'Greek' ancestry (%):
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| 0.00% | 0.10% | 0.20% | 0.31% | 0.41% | 0.51% |
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Percentage of the population reporting 'French' ancestry (%):
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| 0.486% | 0.504% | 0.521% | 0.538% | 0.556% | 0.573% |
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Percentage of the population reporting 'British' ancestry (%):
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| 0.2548% | 0.2578% | 0.2607% | 0.2637% | 0.2666% | 0.2696% |
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Percentage of the population reporting 'Italian' ancestry (%):
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| 0.18% | 0.53% | 0.88% | 1.23% | 1.57% | 1.93% |
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Percentage of the population reporting 'Welsh' ancestry (%):
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| 0.000% | 0.037% | 0.074% | 0.111% | 0.148% | 0.186% |
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Percentage of the population reporting ' Mexican' ancestry (%):
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| 0.81% | 0.89% | 0.97% | 1.05% | 1.13% | 1.22% |
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Percentage of the population reporting ' Spaniard' ancestry (%):
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| 0.32% | 0.38% | 0.44% | 0.50% | 0.56% | 0.63% |
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Percentage of the population reporting ' Puerto Rican' ancestry (%):
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| 0.00% | 0.10% | 0.20% | 0.31% | 0.41% | 0.51% |
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Percentage of the population reporting ' Cuban' ancestry (%):
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| 0.00% | 0.06% | 0.11% | 0.17% | 0.22% | 0.28% |
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Percentage of the population reporting 'Sri Lankan' ancestry (%):
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| 0.000% | 0.032% | 0.065% | 0.097% | 0.130% | 0.163% |
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