How many countries are in stage 2 and 3 of demographic transition?

The transition to Stage 2 is still a comparatively recent phenomenon in human history. Not until the Industrial Revolution did the first countries make the transition from Stage 1 to Stage 2. Still, there are a sum of countries that continue in Stage 2 of the Demographic Transition for a range of social and economic reasons, including much of Sub-Saharan Africa, Guatemala, Nauru, Palestine, Yemen and Afghanistan.

Countries making the transition to Stage 3 all have some relative steadiness - economic, social or political. It has been discussed whether or not these factors influence birth and death rates or if birth and death rates influence a country’s development. Regardless, stable population growth provides important advantages for a country, offering opportunities to strengthen its economy as a noticeable number of its citizens will be in their working years. As such, Stage 3 is often watched as a marker of significant development. Examples of Stage 3 countries are Colombia, Botswana, India, Jamaica, Kenya, South Africa, Mexico, and the United Arab Emirates, just to name a few.