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The Scottish Abstract of Statistics No 26,1998
1 population, vital statistics and elections
Introduction
1.1 The Registrar General for Scotland is responsible for collecting statistics of population and vital events (i.e. births, marriages and deaths). The census which is held every ten years is the main source for population statistics. The information on births, marriages and deaths is obtained from the civil registration system.
Population estimates
1.2 The mid-1997 population estimates presented in section 1A are based on the number of residents counted in the 1991 Census (adjusted for definition differences and under counting) with allowances for subsequent births, deaths and migration. The population is defined to include all persons usually resident in Scotland whatever their nationality. Members of United Kingdom and non-UK armed forces stationed in Scotland are included. Armed Forces stationed outside Scotland are excluded. Students are treated as being resident at their term-time address.
1.3 Population projections in table 1A1 for Scotland are prepared at regular intervals by the Government Actuary’s Department. The Registrar General is consulted about these. The latest projection, which was based on estimates for mid-1996, used the following assumptions :
1.3.1 The fertility rates were based on assumptions on the average completed family size of successive generations of women. It was assumed that this would continue to fall from the current figure of over 2 children per women for those now in their forties, to 1.69 for those born in 1970, before rising again to 1.75 for those born in 1982 and later. The annual number of births is projected to fall below 60,000 in 1996-97 and remain so for the rest of the projection period.
1.3.2 The mortality rates (or death rates) for the first year of the projection, 1996-97, were based on the available information about actual deaths in that period. The mortality rates for the later years were based on the long-term trends up to 1996-97. Generally, mortality rates were assumed to fall, though at some young adult ages it was assumed that the rates would continue to increase for some years to come. In line with long-term trends, it was assumed that mortality rates for Scotland will continue to be higher than those for England and Wales.
1.3.3 It is assumed that net migration into Scotland will decrease from a loss of 6,000 people in 1996-97 to a loss of 3,000 people a year to the end of the projection period. The assumptions were based on analyses of trends in civilian migration to and from the United Kingdom and between Scotland, England, Northern Ireland and Wales. It should be noted that in the longer term migration assumptions may be substantially different from what actually occurs.
Electors
1.4 Statistics on electors are based on returns from Electoral Registration Officers summarising the register of electors published each year in February. The total number of electors includes ‘attainers’ - persons who reach 18 years of age during the life of the register.
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