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Natural Increase.—The natural increase for the year, i.e.,
excess of births over deaths, was 1,155 compared with the figure of
1,178 for the previous year.
Emigration!Immigration.—Taking into account a recorded
natural increase of 1,155, there is a presumptive emigration from
the Borough of 1,335 persons.
Expectation of Life.—From 1841, when the expectation of life
at birth was 40 years for males and 42 for females, there was a
gradual but persistent rise in both these figures until 1954, but since
that year the expectation of life at birth has scarcely changed and
now stands at 68.3 years for males and 74.4 for females.
Composition of Population:
(a) Sex Ratio—Taking the 1961 Census as a basis, it is estimated
that the total population of Greenwich is made up of 112,314 males
and 119,276 females, giving a sex ratio of 1,062 females per 1,000 males.
Ratios for Greater London and England and Wales are 1,094
and 1,055 respectively.
(b) Age Composition—It has been expedient from time to time to
make analyses of the population figures with particular regard to age
distribution in relation to whooping cough, diphtheria, poliomyelitis
and B.C.G. prophylaxis and, more recently, the problem of the aged.
In line with the general trend throughout the country, Greenwich has
an ageing population and the number of persons outside the normal
working range is still increasing.
From details given in the following table it will be seen that
the "working" population of Greenwich, i.e. those between 15 and
65 years amounts to approximately 65.5% and that of "dependent"
groups collectively, to 34.5%. In effect, this means that for every two
persons of "working age" there is one dependent person outside
this group.