Pop quiz, nearly a century after women received the right to vote, how many states have elminated the wage gap between sexes? According to a study released by the Institute for Women's Policy Research on November 16th - ZERO. Nationwide the median wages for women compared to men is 76 percent. That's a small change from 1989 when it was 69 percent. Washington, D.C. leads the country in wage equality with women earning 92 cents for every dollar men earn. The widest is Wyoming, where a woman on average earns 66 percent less than a man. In Louisiana, black women earn 29 percent of what white men earn.