Only six countries have equal rights for men and women, World Bank finds

London (CNN)- The world is moving towards legal gender equality -- but it's moving very, very slowly.

Only six countries currently give women and men equal rights, a major report from the World Bank has found.

That's an increase -- from zero -- compared to a decade ago, when the organization started measuring countries by how effectively they guarantee legal and economic equality between the genders.

But the rate of progress means that, by CNN calculations, women won't achieve full equality in the areas studied by the World Bank until 2073.