Dimension Films' " Scream 4 " comes in No. 2 with $19.2 million; Robert Redford's limited player "The Conspirator" meets its goal in grossing roughly $4 million. Twentieth Century Fox’s Rio outperformed expectations in its domestic launch, grossing an estimated $40 million from 3,826 theaters to help break the long-running box office slump. Worldwide, the 3D toon has soared past $169 million in its first 12 days. Make sure to read my reviews on Hanna and Rio . Domestic box office revenues were up 12% from the same weekend a year ago, the first significant gain since before Christmas. With studios readying their summer slates, the boost couldn’t have come at a better time. Rio, a sizeable victory for Vanessa Morrison’s Fox Animation Studios and Blue Sky Studios, received an A CinemaScore and is the biggest domestic opening for a G-rated toon since Toy Story 3. On Saturday, Rio was up 65%, thanks to good word of mouth. The movie is poised to do great