From TCG, here's a peek at their annual list of most produced plays & playwrights.
The ten playwrights receiving the most productions in the US in the coming 2010-2011 season (excluding Shakespeare) are...
Patrick Barlow: 26 productionsOf course your first response will be...Who's Patrick Barlow? Answer: 39 Steps.
Tracy Letts: 20
Sarah Ruhl: 19
Lynn Nottage: 17
August Wilson: 17
Annie Baker: 17
Tennessee Williams: 15
Steven Dietz: 15
Edward Albee: 15
George Bernard Shaw: 13
(Real answer: four-actor reduction of popular Alfred Hitchcock movie.)
My second response is once again to tip my hat to Steven Dietz--once again America's least-known most-produced dramatist.
Other things we learn from the list: lots of productions of Ruined (Nottage); Americans still love Shaw; and that Annie Baker joins Letts and Ruhl with not just one but multiple popular titles in the ether now.
And, for further context, note that Shakespeare still blows all these royalty-earning artists away with 115 productions.