Page:Walter Renton Ingalls - Current Economic Affairs (1924).pdf/89

Rh {| class="table horizborder cc cr"
 * - class="header"
 * Year
 * Production, tons
 * Population
 * Tons per head
 * 1913
 * 1,113,344,000
 * 97,278,000
 * 11.44
 * 1914
 * 1,055,770,000
 * 99,194,000
 * 10.64
 * 1915
 * 1,095,771,000
 * 100,428,000
 * 10.91
 * 1916
 * 1,164,943,000
 * 101,722,000
 * 11.45
 * 1917
 * 1,227,036,000
 * 103,059,000
 * 11.91
 * 1918
 * 1,211,092,000
 * 104,182,000
 * 11.62
 * 1919
 * 1,088,146,000
 * 104,847,000
 * 10.38
 * 1920
 * 1,251,982,000
 * 106,381,000
 * 11.77
 * 1921
 * 1,034,606,000
 * 107,785,000
 * 9.60
 * 1922
 * 1,063,154,000
 * 109,184,000
 * 9.74
 * }
 * 1921
 * 1,034,606,000
 * 107,785,000
 * 9.60
 * 1922
 * 1,063,154,000
 * 109,184,000
 * 9.74
 * }
 * 9.74
 * }

in terms of weight by the use of well-known factors. The summation in tons represents practically the whole production of the United States. Statistics of the population of the United States by census are available only at decennial intervals, but statisticians have developed nearly accurate methods for computing the population annually for intervening years.

The statistics of production and population become more illuminating if they be separated into agricultural and non-agricultural. This may be done with sufficient accuracy, for we know that according to the census the farm population of the United States changed but little from Jan. 1, 1910, when it was 30,925,000, to Jan. 1, 1920, when it was 31,357,670. If we assume a constant farm population of 31,000,000 and if we assume that the difference between that figure and the total population is non-agricultural, the quotients will be no more than insignificantly out of the way. These computations appear in the two tables immediately following: