Did you happen to see the Washington Post article by Mark Berman (3/26/12) noting that MARC/MTA set records this February? MARC came in at a whopping "average weekday ridership of 35,210" which is up 6.1% from the same period last year.
This is timely because we are expecting MARC to release the next version of their proposed 2012 Brunswick Line schedule in the next couple weeks. Keep tuned for that!