The World Bank explains this phenomenon: "Although the population growth rate for developing countries has been decreasing for several decades, the number of people added to the population each year has been increasing because the population base has become larger" (30).
Benki ya Dunia inaeleza: “Ingawa kiwango cha idadi ya watu kwa nchi zinazoendelea imekuwa ikienda chini kwa miongo kadhaa sasa, idadi ya watu inaongezeka kila mwaka kwa sababu msingi wa idadi ya watu umepanuka” (30).