Birth rate
The region of Sub-Saharan Africa has the highest birth rate in the world. As of 2016, Niger, Mali, Uganda, Zambia, and Burundi have the highest birth rates in the world. This is part of the fertility-income paradox, as these countries are very poor, and it may seem counter-intuitive for families there to have so many children. The inverse relationship between income and fertility has been termed a "demographic-economic "paradox"" by the notion that greater means would enable the production of more offspring as suggested by the influential Thomas Malthus.
Russia
In 2006, in a bid to compensate for the country's demographic decline, the Russian government started simplifying immigration laws and launched a state program "for providing assistance to voluntary immigration of ethnic Russians from former Soviet republics". In 2009 Russia experienced its highest birth rate since the dissolution of the Soviet Union. In 2012, the birth rate increased again. Russia recorded 1,896,263 births, the highest number since 1990, and even exceeding annual births during the period 1967–1969, with a TFR of about 1.7, the highest since 1991. (Source: Vital statistics table below)