Yes, according to the Broadway League's latest report, Broadway grosses in 2009-2010 were over a billion dollars, up 1.5% from the previous season.
The number of actual tickets sold and people attending? That was down 3%.
You do the math.
(Answer: them's some expensive tickets!)
More info at the League site. Such as this, for those keeping score:
During the 2009-2010 season, 39 shows opened (11 new musicals, 14 new plays, 6 musical revivals, and 8 play revivals).Yes, more plays were produced than musicals....but they are cheaper after all.