1931 Census of England and Wales, General Report, Table 3 : " Intercensal Movements, 1871-1931 (Percentages)".

Intercensal Period Net Population Increase Increase by Births Decrease by Deaths Natural Increase Outward Balance of Migration
1871-1881 14.4 37.9 22.8 15.1 0.7
1881-1891 11.7 34.2 20.3 14.0 2.3
1891-1901 12.2 31.6 19.2 12.4 0.2
1901-1911 10.9 28.6 16.1 12.4 1.5
1911-1921 5.0 23.0 14.6 8.4 3.3
1921-1931 5.5 18.3 12.4 5.9 0.4