This was seen as the 'fruits' of the wide range of incentives the government has implemented. A common success was observed in South Korea in which both countries share a similar title at the start of the 21 century characterized as one of the 'four Asian Tigers'; a successful implementation of the national family planning program that started in 1962 and this has occurred simultaneously with rapid socioeconomic development. Between 1960 and 1988, the nation's total fertility was reduced from 6.0 children per woman to 1.6, which was below replacement-level fertility.
Similarly, since the major demographic transition in Korea and Singapore took place in the midst of the rapid socioeconomic developments between 1960 and 1990, it is not easy to identify clearly the root factor that contributed to the fertility decline. Therefore, there is no substantial reason to associate the resultant numbers with the effectiveness of anti-natalist policies in LDCs.
Lastly, there are countries that may have seemingly benefitted from their own national scaled problems such as in the case of Rwanda. Rwanda is a recent success story of rapid fertility decline in Sub-Saharan Africa. The total fertility rate dropped from 6.1 in 2005 to 4.6 in 2010. The use of modern contraception among women living in a union increased from 10 to 45% in the same period. This impressive decline came after a period of stalled fertility levels in the 1990s, like many other countries in Sub-Saharan Africa. Although the stall of fertility was evident, it is not yet clear precisely which determinants lay behind it. The lack of a clear explanation also applies to the recent strong drop in fertility.
A detailed analysis of the causes that contributed to changes in fertility in Rwanda, could be the side effects of the 1990s in which on record as being the black page in Rwanda's recent history, marked by civil war, genocide, mass movements of refugees, and economic deterioration.
