 The Global Gender Gap Report provides a tool for tracking gender equality over time. The index looks at four different categories. On health, we look at the sex ratio at birth and the gender gap on the years lost to disease and disability. On education, we're trying to understand literacy gaps as well as primary, secondary and tertiary enrollment. On economic participation, we want to understand how many women versus men are making it into the labor force. On political empowerment, we look at the gender gap in Parliament, amongst ministers and in the executive role. In 2015, we're covering 145 countries, and not a single one of them has closed the gender gap.