Approximate shares of undergraduate enrollment by sex:

  Year    Male     Female
  1970    58%      42%
  1975    53%      47%
  1980    48%      52%
  1985    46%      54%
  1990    45%      55%
  1995    44.5%    55.5%
  2000    43.9%    56.1%
  2005    43.3%    56.7%
  2010    43.0%    57.0%
  2015    43.6%    56.4%
  2020    42.7%    57.3%
  2025    42.7%    57.3%

So men have been in the minority for at least 46 years, and the skew is as large as it was in 1970, but reversed.