In what year was 'The Revenant' released?

Who directed 'Gone Baby Gone' (2007)? Who directed 'Birdman' (2014)? In what year was 'Birdman' released? Who directed 'The Revenant' (2015)? In what year was 'Gravity' released? Who directed 'Roma' (2018)? Who directed 'Children of Men' (2006)? Who directed 'Harry Potter and the Prisoner of Azkaban' (2004)?