The active population (or labour force) is defined as the sum of persons in employment and unemployed persons seeking employment. Source: United Nations, World Population Ageing 1950-2050, Population Division, Department of Economic and Social Affairs, 2002.
Table 11 Trends in total fertility rate Regions/countries  1950-55  1975-80  2000-05  2025-30  2045-50  World  5.0  3.9  2.7  2.3  2.1  More developed regions Less developed regions Least developed regions  2.8 6.2 6.6  1.9 4.6 6.4  1.5 2.9 5.2  1.7 2.4 3.6  1.9 2.2 2.5  Asia Eastern Asia South-Central Asia South-East Asia Western Asia  5.9 5.7 6.1 6.0 6.4  4.2 3.1 5.1 4.9 5.2  2.5 1.8 3.2 2.5 3.6  2.1 1.9 2.2 2.1 2.8  2.1 1.9 2.1 2.1 2.4  China  6.2  3.3  1.8  1.9  1.9  India Bangladesh Sri Lanka Pakistan  6.0 6.7 5.9 6.3  4.8 5.7 3.8 6.3  3.0 3.6 2.1 5.1  2.1 2.1 1.9 2.8  2.1 2.1 1.9 2.1  Indonesia Thailand Malaysia Philippines  5.5 6.4 6.8 7.3  4.7 4.0 4.2 5.5  2.3 2.0 2.9 3.2  2.1 1.9 2.1 2.1  2.1 1.9 2.1 2.1  Note: The total fertility rate is the average number of children a woman would bear over the course of her lifetime if current age specific fertility rates remained constant throughout her childbearing years (normally between the ages of 15 and 49).