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Percentage of the population reporting 'German' ancestry (%):
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| 9.1% | 10.3% | 11.4% | 12.5% | 13.5% | 14.7% |
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Percentage of the population reporting 'American' ancestry (%):
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| 7.2% | 9.0% | 10.7% | 12.4% | 14.2% | 15.9% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 7.3% | 8.6% | 9.8% | 11.0% | 12.2% | 13.5% |
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Percentage of the population reporting 'English' ancestry (%):
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| 2.4% | 4.7% | 6.9% | 9.2% | 11.4% | 13.7% |
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Percentage of the population reporting 'French' ancestry (%):
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Percentage of the population reporting 'Polish' ancestry (%):
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| 1.39% | 1.81% | 2.22% | 2.63% | 3.04% | 3.45% |
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Percentage of the population reporting 'Italian' ancestry (%):
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| 1.60% | 1.96% | 2.32% | 2.68% | 3.03% | 3.40% |
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Percentage of the population reporting 'Scotch-Irish' ancestry (%):
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| 0.59% | 1.08% | 1.57% | 2.06% | 2.55% | 3.05% |
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Percentage of the population reporting 'Norwegian' ancestry (%):
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Percentage of the population reporting 'Scottish' ancestry (%):
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Percentage of the population reporting 'European' ancestry (%):
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Percentage of the population reporting 'British' ancestry (%):
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| 0.23% | 0.46% | 0.68% | 0.91% | 1.14% | 1.37% |
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Percentage of the population reporting 'Dutch' ancestry (%):
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| 0.62% | 0.81% | 0.99% | 1.18% | 1.36% | 1.55% |
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Percentage of the population reporting 'Northern European' ancestry (%):
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| 0.00% | 0.11% | 0.23% | 0.34% | 0.45% | 0.57% |
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Percentage of the population reporting 'Armenian' ancestry (%):
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| 0.00% | 0.10% | 0.21% | 0.31% | 0.41% | 0.52% |
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Percentage of the population reporting ' Mexican' ancestry (%):
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Percentage of the population reporting ' South American' ancestry (%):
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| 0.43% | 0.60% | 0.76% | 0.92% | 1.09% | 1.25% |
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Percentage of the population reporting ' Colombian' ancestry (%):
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| 0.00% | 0.25% | 0.50% | 0.75% | 1.00% | 1.25% |
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Percentage of the population reporting ' Puerto Rican' ancestry (%):
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| 0.23% | 0.63% | 1.02% | 1.42% | 1.81% | 2.21% |
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Percentage of the population reporting ' Central American' ancestry (%):
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| 0.00% | 0.26% | 0.53% | 0.79% | 1.06% | 1.33% |
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Percentage of the population reporting 'Okinawan' ancestry (%):
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| 0.00% | 0.05% | 0.10% | 0.15% | 0.21% | 0.26% |
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Percentage of the population reporting 'Indian' ancestry (%):
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