Click here to see the infograhic on gender wage gap created by LearnStuff.com.
Even with moves toward equalizing pay between men and women, men still make almost 20% more than women in nearly all industries in USA.
This is despite the fact that women receive the same education, with the same tuition price tags and levels of debt upon graduation. The only major differences are that there are more ladies in college and they have better average GPAs to boot. The benefits of paying women their fair share include increasing the GDP while reducing the poverty rates for families.
See reference site