The United Nations’ Department of Economic and Social Affairs has recently been releasing data on the populations of the world's countries.
Within this the countries with the most male-dominated and female-dominated populations have been disclosed.
Here are the top tens:
In terms of the bigger picture, female-dominated populations occur most in eastern Europe, whereas male dominated populations occur most in the Middle East, and parts of Asia.
These ratios are predominately affected by conflict and cultural influence.
For example, Russia took the most casualties from the Second World War and has been recovering ever since - in 1950 there were just 76.6 men per 100 women.
That number has been rising, reaching a peak in 1995, before declining again slightly - the figure is now 86.8.