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Percentage of the population reporting 'German' ancestry (%):
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| 17.5% | 19.9% | 22.2% | 24.5% | 26.8% | 29.2% |
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Percentage of the population reporting 'English' ancestry (%):
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| 10.2% | 11.4% | 12.6% | 13.7% | 14.9% | 16.1% |
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Percentage of the population reporting 'Irish' ancestry (%):
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| 8.2% | 10.6% | 13.0% | 15.4% | 17.8% | 20.3% |
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Percentage of the population reporting 'American' ancestry (%):
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Percentage of the population reporting 'Norwegian' ancestry (%):
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| 6.7% | 7.5% | 8.3% | 9.0% | 9.8% | 10.6% |
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Percentage of the population reporting 'French' ancestry (%):
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| 1.4% | 3.3% | 5.2% | 7.0% | 8.9% | 10.8% |
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Percentage of the population reporting 'European' ancestry (%):
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Percentage of the population reporting 'Italian' ancestry (%):
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| 2.86% | 3.24% | 3.61% | 3.99% | 4.36% | 4.74% |
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Percentage of the population reporting 'Swedish' ancestry (%):
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Percentage of the population reporting 'Scotch-Irish' ancestry (%):
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Percentage of the population reporting 'Scottish' ancestry (%):
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| 2.37% | 2.68% | 2.98% | 3.28% | 3.57% | 3.88% |
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Percentage of the population reporting 'Polish' ancestry (%):
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Percentage of the population reporting 'Welsh' ancestry (%):
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Percentage of the population reporting 'Dutch' ancestry (%):
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| 1.38% | 1.72% | 2.06% | 2.40% | 2.74% | 3.08% |
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Percentage of the population reporting 'Russian' ancestry (%):
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Percentage of the population reporting ' Mexican' ancestry (%):
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| 0.3% | 3.3% | 6.2% | 9.2% | 12.1% | 15.1% |
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Percentage of the population reporting ' Central American' ancestry (%):
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Percentage of the population reporting ' Nicaraguan' ancestry (%):
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Percentage of the population reporting ' Spanish' ancestry (%):
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| 0.000% | 0.046% | 0.092% | 0.137% | 0.183% | 0.229% |
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Percentage of the population reporting ' Panamanian' ancestry (%):
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| 0.000% | 0.041% | 0.083% | 0.124% | 0.166% | 0.207% |
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Percentage of the population reporting 'Nepalese' ancestry (%):
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| 0.00% | 0.19% | 0.37% | 0.56% | 0.75% | 0.94% |
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Percentage of the population reporting 'Filipino' ancestry (%):
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| 0.00% | 0.11% | 0.22% | 0.33% | 0.44% | 0.56% |
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Percentage of the population reporting 'Vietnamese' ancestry (%):
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| 0.00% | 0.15% | 0.30% | 0.44% | 0.59% | 0.74% |
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Percentage of the population reporting 'Japanese' ancestry (%):
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| 0.00% | 0.09% | 0.19% | 0.28% | 0.38% | 0.48% |
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Percentage of the population reporting 'Indian' ancestry (%):
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| 0.00% | 0.12% | 0.24% | 0.36% | 0.48% | 0.60% |
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