The number of members, originally 196, is subject to change after each decennial census.
From 1850 to 1900 fairly full industrial statistics were gathered as a part of each decennial census.
But according to the eleventh census the decennial rate of growth of population fell suddenly from over 30%, which the figures had shown between 1870 and 1880, and in every preceding decade of the century, except that of the Civil War, to less than 25%, in spite of an immigration nearly double that of any preceding decade'.
The population at the succeeding decennial censuses was as follows: (1900), 45,246; / (1870), 7 1, 44 0; (1880), 11 5,5 8 7; (1890), 20 4,4 68; (1900), 285,315.
The various departments of the federal and the provincial governments publish annual reports and frequent special reports, such as the decennial report on the census, from which a vast quantity of information may be obtained.