Nearly 30 million people around the world are living as slaves, according to a new index ranking 162 countries. The Global Slavery Index 2013says India has the highest number of people living in conditions of slavery at 14 million. But Mauritania has the highest proportional figure with about 4% of its population enslaved. The report's authors hope it will help governments tackle what they call a "hidden crime". 'Better measure' Estimated number of slaves 1. India - 13,956,010 2. China - 2,949,243 3. Pakistan - 2,127,132 4. Nigeria - 701,032 5. Ethiopia - 651,110 6. Russia - 516,217 7. Thailand - 472,811 8. DR Congo - 462,327 9. Burma - 384,037 10. Bangladesh - 343,192 The index was compiled by Australian-based rights organisation Walk Free Foundationusing a definition of modern slavery that includes debt bondage, forced marriage and human trafficking. "A lot of governments won't like hearing what we have to say," WFF chief executi...