The survey by anti-slavery campaign group Walk Free exposes India as enslaving more people overall and Mauritania with the highest percentage.
The group's Global Slavery Index reveals the total is 20% higher than for 2013 because of better methodology. In 2012, the International Labor Organization estimated that almost 21 million people were victims of forced labor. Now, the figure is 36 million.
Can you believe this: Walk Free found evidence of slavery in all 167 countries it surveyed. At the top of the list comes India, where more than 14 million people live as slaves. Next in the index comes China, with more than 3 million slaves, followed by Pakistan, Uzbekistan, and then Russia.
Do you know how the garment you're wearing now was produced? If it's from India or China, chances are, people were forced to make it. This sobering thought should spur all of us to support our government's drive to put a stop to slavery in every form.
Read how to spot the signs of slavery amongst us at Modern Slavery.