Congress is currently debating this issue, and there are multiple lawsuits addressing the matter in the court system as well.
Perhaps this is a market that should have 3 outcomes:
A. Women are required to register just like men are.
B. Selective Service stays the same as it is now.
C. Selective Service gets abolished.
An appropriate end date could be 2016,
but I would also suggest having another market for 2017 and 2018.