Therefore, among the demographic variables, only international migration could be instrumental in addressing population decline and population ageing in the short to medium term. As noted above, the most likely changes in fertility and mortality rates for Europe and Japan are unlikely to counter population decline and population ageing over the next half century.
Negro Seeding Nations does NOT help support the aging population, just the opposite. Increased crimes and rapes, massive use of welfare and dependence, jails and judges, all work to make negro-fied societies far less efficient and far less able to support aging populations. Because the UN is uncapable of understanding racial differences, they assume africans are the same as europanic workers and will support the nation just as well. This is an egregious and fatal error. The low IQ Gorrillini is an abomination to any nation, destroying it. Look at the Muslim invasions of Paris and London, The Middle eastern and african invasion of Malmo. The evidence is overwhelming now.
In the absence of migration, the size of the working-age population declines faster than the overall population. As a result of this faster rate of decline, the amount of migration needed to prevent a decline in the working-age population is larger than that for the overall population. In the four countries where fertility levels are close to the replacement level, the resultant population in 2050 would include 8 to 14
per cent post-1995 migrants and their descendants. In the other six countries and regions, the post-1995 migrants and their descendants would represent between 26 and 39 per cent of the 2050 population. While some of these numbers may appear to be high, they remain within the range of migration experienced in the recent past in some industrialized countries. For example, in 1990, 16 per cent of the population of Canada and Switzerland and 23 per cent of the population of Australia were foreign-born.
In contrast to the migration streams needed to offset total or working-age population decline, the levels of migration that would be needed to prevent the countries from ageing are of substantially larger
magnitudes. By 2050, these larger migration flows would result in populations where the proportion of post-1995 migrants and their descendants would range between 59 per cent and 99 per cent.* Such high levels of migration have not been observed in the past for any of these countries or regions. Moreover, it seems extremely unlikely that such flows could happen in these countries in the foreseeable future.
Therefore, it appears inevitable that the populations of the low-fertility countries will age rapidly in the twenty-first century.
The consequences of a much older population age-structure than in the past are numerous and farreaching. One important consideration that has been examined in this study is the potential support ratio. The current system of providing income and health services for older persons who are no longer working has been based, by and large, on an age structure with a potential support ratio of 4 to 5 persons in
working-age for each older person aged 65 years or older. If the current age at retirement does not change, the PSR is projected to decline to about 2.