No Market Share movement for Drupal Version 7.3x yet sorry.
Get a list of 57,269 websites using Drupal Version 7.3x which includes location information, hosting data, contact details, 18,470 currently live websites
which includes 10,431 domains that redirect to sites in the list. 49,230 sites that used this technology previously and 3,331 websites in the United States currently using Drupal Version 7.3x.
Distribution of locations of all Drupal Version 7.3x customers we've ever tracked.