Try again.
37K, according to Ballparks of Baseball.com, and you have to pull the tarp to do that. And no matter what, EVER, the Sox have stated it will never go above 40K for any reason.
And yet as recently as 10 years ago, your average PERCENTAGE capacity was LESS than that of the Angels, nevermind the Dodgers, Yankees, even the Rockies. Go back 20 years and your average attendance per home game was under 20K.
NOW who's the bandwagoners again?