Inside EVs publishes a monthly sales scorecard for the U.S., and has all the past years in those posts. If I remember right, GM is slightly over 100k right now, neck and neck with Nissan and Tesla. All three will probably hit 200k sometime next year I believe, Tesla first if they reap the 3 like they said they will.
Here's the most recent scorecard post:
http://insideevs.com/monthly-plug-in-sales-scorecard/
Here's the most recent scorecard post:
http://insideevs.com/monthly-plug-in-sales-scorecard/