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Percentage of the population reporting 'German' ancestry (%):
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| 24.0% | 25.5% | 26.9% | 28.3% | 29.7% | 31.2% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 10.1% | 11.5% | 12.9% | 14.3% | 15.7% | 17.2% |
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Percentage of the population reporting 'American' ancestry (%):
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| 8.85% | 9.11% | 9.37% | 9.63% | 9.89% | 10.15% |
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Percentage of the population reporting 'English' ancestry (%):
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| 8.71% | 9.00% | 9.29% | 9.57% | 9.86% | 10.15% |
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Percentage of the population reporting 'Dutch' ancestry (%):
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Percentage of the population reporting 'French' ancestry (%):
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| 1.16% | 1.58% | 2.00% | 2.42% | 2.84% | 3.26% |
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Percentage of the population reporting 'Polish' ancestry (%):
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| 1.08% | 1.51% | 1.93% | 2.36% | 2.78% | 3.21% |
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Percentage of the population reporting 'European' ancestry (%):
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| 1.33% | 1.73% | 2.13% | 2.53% | 2.92% | 3.33% |
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Percentage of the population reporting 'Swedish' ancestry (%):
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Percentage of the population reporting 'Italian' ancestry (%):
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| 1.87% | 2.00% | 2.13% | 2.25% | 2.38% | 2.51% |
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Percentage of the population reporting 'Scottish' ancestry (%):
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| 1.18% | 1.52% | 1.86% | 2.20% | 2.55% | 2.89% |
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Percentage of the population reporting 'Scotch-Irish' ancestry (%):
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| 0.57% | 0.79% | 1.01% | 1.22% | 1.44% | 1.66% |
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Percentage of the population reporting 'Norwegian' ancestry (%):
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Percentage of the population reporting 'Czech' ancestry (%):
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| 0.65% | 0.79% | 0.93% | 1.07% | 1.20% | 1.35% |
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Percentage of the population reporting 'Swiss' 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 ' Mexican' ancestry (%):
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| 1.7% | 3.5% | 5.2% | 7.0% | 8.8% | 10.6% |
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Percentage of the population reporting ' South American' ancestry (%):
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| 0.00% | 0.10% | 0.19% | 0.29% | 0.38% | 0.48% |
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Percentage of the population reporting ' Puerto Rican' 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 ' Argentinean' ancestry (%):
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| 0.00% | 0.10% | 0.19% | 0.29% | 0.38% | 0.48% |
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Percentage of the population reporting ' Peruvian' ancestry (%):
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| 0.000% | 0.039% | 0.077% | 0.116% | 0.154% | 0.193% |
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Percentage of the population reporting 'Laotian' ancestry (%):
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| 0.00% | 0.25% | 0.49% | 0.74% | 0.99% | 1.24% |
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Percentage of the population reporting 'Chinese' ancestry (%):
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| 0.00% | 0.24% | 0.47% | 0.71% | 0.94% | 1.18% |
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Percentage of the population reporting 'Korean' ancestry (%):
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| 0.00% | 0.19% | 0.39% | 0.58% | 0.78% | 0.97% |
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Percentage of the population reporting 'Mixed' ancestry (%):
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| 0.00% | 0.12% | 0.25% | 0.37% | 0.49% | 0.62% |
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Percentage of the population reporting 'Taiwanese' ancestry (%):
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| 0.000% | 0.049% | 0.099% | 0.148% | 0.197% | 0.247% |
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