Table 6 Trends in old-age dependency ratio Regions/countries  1950  1975  2000  2025  2050  World  8.5  9.9  10.9  15.9  24.6  More developed regions Less developed regions Least developed regions  12.2 6.7 5.9  16.6 7.1 5.9  21.2 8.2 5.8  33.4 12.8 6.5  46.5 21.8 9.7  Asia Eastern Asia South-Central Asia South-East Asia Western Asia  6.9 7.3 6.5 6.6 7.7  7.5 8.2 6.8 6.5 8.0  9.2 11.3 7.6 7.4 8.0  14.9 21.4 11.1 12.2 11.0  26.2 39.3 20.0 25.1 17.8  China  7.2  7.8  10.0  19.4  37.2  India Bangladesh Sri Lanka Pakistan  5.8 6.2 10.1 9.4  6.8 6.8 6.7 6.2  8.1 5.4 9.3 6.8  12.2 7.8 18.2 7.9  22.6 16.2 34.7 12.1  Indonesia Thailand Malaysia Philippines  6.9 6.0 9.3 6.8  5.9 5.8 6.9 5.8  7.5 7.7 6.7 6.0  12.2 16.4 13.4 10.1  25.8 34.2 23.8 21.1  Note: The old age dependency ratio is the number of persons 65 years and over per one hundred persons 15 to 64 years.
Source: United Nations, World Population Ageing 1950-2050, Population Division, Department of Economic and Social Affairs, 2002. 8  BIS Review 55/2004  The trends in Asia over the next 50 years will be more reflective of the past 50 years for developed countries, with significant variations across different countries.