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Portable Network Graphic  |  2000-01-18  |  5.1 KB  |  666x241  |  1-bit (2 colors)
   ocr: Average Gas and Health Public for all Coal Farm Federal Electric Care School Railroad Sales- Workers Miners Workers Employees Workers Providers Teachers Workers people 1900 490 547 247 1,033 620 256 328 548 508 1910 630 805 336 1,108 622 338 492 677 630 1920 1,489 2,130 810 1,648 1,432 752 970 1,817 1,270 1930 1,494 909 444 1,492 1,603 933 1,455 1,717 1,569 1940 1,392 1,235 463 1,125 1,795 927 1,435 1,906 1,382 1950 3,255 3,245 1,454 3,220 3,571 2,067 2,794 3,778 3,034 1960 5,260 5,367 1,848 4,721 6,150 3,414 4,762 6,241 5,756 1970 7,747 9,790 3,787 8,040 10,028 6,593 8,299 10,110 NR 1980 15,7 ...