1921 Census of England and Wales, General Report with Appendices, Table 3: " ANNUAL MOVEMENT, 1911-20. (APPROXIMATE ANALYSIS IN THOUSANDS OF POPULATION.)".

Calendar
Year.
Births in
England
and Wales.
Deaths in
England and Wales.
Estimated
Deaths of
Non-Civilians
belonging
to England
and Wales
which
occurred
at the
various
Theatres
of War.
Excess of Births
over all Deaths.
Estimated
Outward
Balance
of Civil
Migration
(- = inward).
Males Fem-
ales
Males
(excluding
Non-
Civilians
after
1st. July,
1914
Fem-
ales
Non-
Civilians
after
1st July,
1914
Males Fem-
ales
Males Females
Yearly
  Average:
                   
1901-5 478 461 276 258 202 203 }31 19
1906-10 469 452 265 250 204 202
                     
1911 449 432 273 255 176 177 87 75
1912 445 428 250 237 195 191 91 78
1913 449 433 262 243 187 190 50 41
1914 447 432 265 249 2 30 150 183 -72 -57
1915 415 399 283 270 9 87 36 129 -19 -15
1916 402 383 254 243 11 128 9 140 -4 -4
1917 341 327 250 237 12 158 -79 90 0 7
1918 339 324 291 297 24 138 -114 27 0 13
1919 356 336 249 246 9 19 79 90 80 114
1920 491 467 239 226 1 16 235 241 71 77