According to The Huffington Post, Google is aware of the problem. Google Doodle team lead Ryan Germick offered this statement to HuffPo:
Women have been underrepresented in history in almost all fields: science, school curricula, business, politics — and, sadly, doodles — despite incredible contributions both directly and behind the scenes. We’ve been working to fix the imbalance in our doodles. This year we’re hoping to have women and men equally represented. So far this year we’ve done doodles for as many women as men, a big shift from figures below 20 percent in past years.