“…In the latest population projections of Canada (Statistics Canada, 2005b), even in the high growth scenario (Scenario 6) assuming an increase in fertility to 1.7 children per woman by 2016, and an increase in immigration rate to 8.5 per thousand population by 2010 (i.e., an increase in annual immigrants from 239,000 in 2005 to 364,000 in 2056), the potential support ratio in 2031 is projected to be 2.7, about the same as that of the projection scenario with migration (Scenario 3) presented in this study, and by 2056, the ratio will only increase to 2.3 working-age persons for each senior, rather than 2.2. The limited effect of international migration on the future age structure of the Canadian population is also presented by George, Nault and Romaniuc (1991). A threefold increase in the annual number of immigrants from 140,000 to 500,000 during a 25-year projection period would not produce significant effect on the young and elderly population.…”