It really is winding down.
Though films often play at that level and less for several additional weeks. For instance, as I've mentioned,
Wrath of the Titans went into its 13th week of release today and is playing in only 70 theaters. In the previous 6 weeks it had been playing in 265, 360, 255, 205, 150, and 105 theaters. And it doesn't even have to be a film that's been doing particularly well at the box office because
Cabin in the Woods went into its 11th week of release today in 196 theaters. In the previous 4 weeks it had been playing in 203, 136, 113, and 224 theaters. And those are but two examples.
42 days 20 hours 48 minutes 2 seconds since the Depp/Burton Dark Shadows has been in release(ET)!!