Percentage of the population reporting 'American' ancestry (%):
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18.44% | 18.55% | 18.66% | 18.77% | 18.87% | 18.99% |
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Percentage of the population reporting 'German' ancestry (%):
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22.3% | 24.1% | 25.8% | 27.5% | 29.2% | 31.0% |
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Percentage of the population reporting 'Irish' ancestry (%):
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Percentage of the population reporting 'English' ancestry (%):
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2.8% | 5.1% | 7.2% | 9.4% | 11.5% | 13.7% |
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Percentage of the population reporting 'Italian' ancestry (%):
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Percentage of the population reporting 'Dutch' ancestry (%):
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0.26% | 0.60% | 0.94% | 1.28% | 1.62% | 1.96% |
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Percentage of the population reporting 'French Canadian' ancestry (%):
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0.00% | 0.12% | 0.23% | 0.35% | 0.47% | 0.59% |
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