In 1970, men aged 18 to 25 were subject to the military draft to serve in the Vietnam War. A man could qualify for a student deferment, however, if he was enrolled in college and made satisfactory progress on obtaining a degree. By 1975, the draft was no longer in existence. The draft did not pertain to women. Using the data in Table 269 of the 2008 edition of the U.S. Statistical Abstract, use women as the control group to estimate (using the difference-in-differences methodology) the effect abolishing the draft had on male college enrollment.