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Percentage of the population reporting 'German' ancestry (%):
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| 18.3% | 20.9% | 23.5% | 26.2% | 28.8% | 31.4% |
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Percentage of the population reporting 'American' ancestry (%):
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| 13.5% | 14.3% | 15.1% | 15.8% | 16.6% | 17.4% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 7.9% | 9.7% | 11.5% | 13.2% | 15.0% | 16.8% |
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Percentage of the population reporting 'English' ancestry (%):
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| 3.7% | 5.1% | 6.4% | 7.7% | 9.0% | 10.3% |
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Percentage of the population reporting 'Italian' ancestry (%):
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| 0.14% | 0.60% | 1.07% | 1.53% | 1.99% | 2.46% |
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Percentage of the population reporting 'Polish' ancestry (%):
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| 0.00% | 0.43% | 0.85% | 1.28% | 1.70% | 2.13% |
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Percentage of the population reporting 'Dutch' ancestry (%):
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Percentage of the population reporting 'European' ancestry (%):
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| 0.00% | 0.37% | 0.74% | 1.12% | 1.49% | 1.87% |
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Percentage of the population reporting 'Welsh' ancestry (%):
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| 0.28% | 0.56% | 0.83% | 1.11% | 1.38% | 1.66% |
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Percentage of the population reporting 'French' ancestry (%):
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| 0.59% | 0.90% | 1.20% | 1.50% | 1.80% | 2.11% |
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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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| 0.18% | 0.53% | 0.88% | 1.23% | 1.58% | 1.93% |
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Percentage of the population reporting 'Brazilian' ancestry (%):
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| 0.00% | 0.31% | 0.61% | 0.92% | 1.22% | 1.53% |
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Percentage of the population reporting 'Greek' ancestry (%):
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| 0.00% | 0.29% | 0.58% | 0.88% | 1.17% | 1.46% |
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Percentage of the population reporting 'Hungarian' ancestry (%):
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| 0.00% | 0.22% | 0.44% | 0.66% | 0.88% | 1.10% |
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Percentage of the population reporting ' Mexican' ancestry (%):
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Percentage of the population reporting ' Puerto Rican' ancestry (%):
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| 0.000% | 0.021% | 0.042% | 0.063% | 0.084% | 0.106% |
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Percentage of the population reporting ' Central American' ancestry (%):
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| 0.00% | 0.24% | 0.47% | 0.71% | 0.95% | 1.19% |
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Percentage of the population reporting 'Korean' ancestry (%):
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| 0.00% | 0.12% | 0.23% | 0.35% | 0.46% | 0.58% |
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Percentage of the population reporting 'Vietnamese' ancestry (%):
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| 0.000% | 0.041% | 0.083% | 0.124% | 0.165% | 0.207% |
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