1921 Census of England and Wales, General Report with Appendices, Table 38 : " Comparison by Age Groups of Enumerated Population in 1921, with the Numbers expected by survivorship from the 1911 Enumerated Population after allowing for the Births, Civilian Deaths and Civilian Migration of the intervening Period".

Age of Group
(Last Birthday).		 1911
Census
Population
(2nd April,
1911).		 Movement
2nd April
1911, to
30th June,
1921.		 Expected
Survivors
on
30th June,
1921.		 1921 Census
Population
carried to
30th June,
1921.		 Discrepancy,
i.e., expected
Survivors
less
enumerated,
1921.
On 2nd April,
1911.		 On 30th June,
1921.

MALES.		            
  0-3¾— 9— 1,457 336 1,793 1,831 -38
3¾— 14— 1,874 -76 1,798 1,766 32
8¾— 19— 1,771 -90 1,681 1,502 179
13¾— 24— 1,678 -101 1,577 1,350 227
18¾— 29— 1,538 -109 1,429 1,295 134
23¾— 34— 1,466 -107 1,359 1,267 92
28¾— 39— 1,405 -111 1,294 1,247 47
33¾— 44— 1,293 -118 1,175 1,176 -1
38¾— 49— 1,135 -128 1,007 1,014 -7
43¾— 54— 946 -145 801 820 -19
48¾— 59— 813 -163 650 635 15
53¾— 64— 642 -190 452 476 -24
58¾— 69— 513 -209 304 316 -12
63¾— 74— 385 -209 176 180 -4
68¾— 79— 275 -186 89 81 8
73¾— 84— 153 -123 30 27 3
78¾— 89— 69 -65 4 6 -2
83¾— 94— 33 -30 3 1 2

FEMALES.		            
  0-3¾— 9— 1,440 338* 1,778 1,813 -35
3¾— 14— 1,874 -71 1,803 1,789 14
8¾— 19— 1,775 -85 1,690 1,715 -25
13¾— 24— 1,696 -110 1,586 1,645 -59
18¾— 29— 1,668 -121 1,547 1,538 9
23¾— 34— 1,651 -120 1,531 1,479 52
28¾— 39— 1,536 -117 1,419 1,410 9
33¾— 44— 1,389 -118 1,271 1,269 2
38¾— 49— 1,218 -116 1,102 1,083 19
43¾— 54— 1,023 -128 895 889 6
48¾— 59— 879 -140 739 712 27
53¾— 64— 706 -162 544 562 -18
58¾— 69— 577 -191 386 412 -26
63¾— 74— 461 -212 249 263 -14
68¾— 79— 353 -217 136 131 5
73¾— 84— 216 -161 55 52 3
78¾— 89— 105 -96 9 13 -4
83¾— 94— 58 -54 4 2 2

*Allowance is made here for the births which occurred between 2nd April, 1911 and 30th June, 1921.