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Percentage of the population reporting 'German' ancestry (%):
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| 25.3% | 28.0% | 30.7% | 33.4% | 36.1% | 38.8% |
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Percentage of the population reporting 'American' ancestry (%):
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| 7.6% | 8.8% | 10.0% | 11.1% | 12.3% | 13.5% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 5.1% | 6.2% | 7.3% | 8.4% | 9.5% | 10.6% |
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Percentage of the population reporting 'English' ancestry (%):
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| 5.62% | 6.02% | 6.41% | 6.80% | 7.20% | 7.60% |
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Percentage of the population reporting 'Swiss' ancestry (%):
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Percentage of the population reporting 'Scottish' ancestry (%):
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| 1.27% | 1.63% | 2.00% | 2.36% | 2.72% | 3.09% |
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Percentage of the population reporting 'French' ancestry (%):
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Percentage of the population reporting 'Dutch' ancestry (%):
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| 1.03% | 1.30% | 1.56% | 1.82% | 2.08% | 2.35% |
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Percentage of the population reporting 'European' ancestry (%):
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| 0.58% | 1.08% | 1.57% | 2.07% | 2.56% | 3.06% |
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Percentage of the population reporting 'Italian' ancestry (%):
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| 0.25% | 0.72% | 1.18% | 1.63% | 2.09% | 2.56% |
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Percentage of the population reporting 'Greek' ancestry (%):
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| 0.00% | 0.48% | 0.97% | 1.45% | 1.94% | 2.43% |
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Percentage of the population reporting 'Polish' ancestry (%):
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| 0.48% | 0.73% | 0.97% | 1.21% | 1.45% | 1.70% |
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Percentage of the population reporting 'Norwegian' ancestry (%):
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| 0.00% | 0.16% | 0.33% | 0.49% | 0.65% | 0.82% |
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Percentage of the population reporting 'Scotch-Irish' ancestry (%):
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| 0.00% | 0.28% | 0.55% | 0.83% | 1.10% | 1.39% |
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Percentage of the population reporting 'Welsh' ancestry (%):
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| 0.10% | 0.30% | 0.49% | 0.68% | 0.88% | 1.07% |
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Percentage of the population reporting ' Mexican' ancestry (%):
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Percentage of the population reporting ' Dominican' ancestry (%):
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| 0.00% | 0.34% | 0.68% | 1.03% | 1.37% | 1.71% |
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Percentage of the population reporting ' Central American' ancestry (%):
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| 0.000% | 0.046% | 0.092% | 0.138% | 0.184% | 0.230% |
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Percentage of the population reporting ' Guatemalan' ancestry (%):
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| 0.000% | 0.046% | 0.092% | 0.138% | 0.184% | 0.230% |
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Percentage of the population reporting ' Puerto Rican' ancestry (%):
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| 0.000% | 0.010% | 0.020% | 0.029% | 0.039% | 0.049% |
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Percentage of the population reporting 'Vietnamese' ancestry (%):
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| 0.00% | 0.21% | 0.42% | 0.63% | 0.84% | 1.06% |
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Percentage of the population reporting 'Korean' ancestry (%):
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| 0.00% | 0.26% | 0.52% | 0.79% | 1.05% | 1.32% |
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Percentage of the population reporting 'Indian' ancestry (%):
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| 0.00% | 0.05% | 0.10% | 0.15% | 0.21% | 0.26% |
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