“Best Picture” is considered the premier award of the Academy Awards, it is the final award presented at the ceremony. In 2009, AMPAS announced that the number of films to be nominated in the Best Picture award category would increase from five to ten, starting with the 82nd Academy Awards. Two years after this change, the Academy revised the rule again so that the number of films nominated was between 5 and 10.
Aslo the name underwent several changes over the years. Since 1962 it has been called the Best Picture award.
1927/28–1928/29: Academy Award for Outstanding Picture
1929/30–1940: Academy Award for Outstanding Production
1941–1943: Academy Award for Outstanding Motion Picture
1944–1961: Academy Award for Best Motion Picture
1962–present: Academy Award for Best Picture
As of 2017, there have been 537 films nominated for Best Picture and 89 winners.
The Complete List of ‘Best Picture’ Oscar winners till the 89th Academy Award (2017).
89th Academy Awards: Moon Light (2016)
88th Academy Awards: Spotlight (2015)
87th Academy Awards: Birdman (2014)
86th Academy Awards: 12 Years a Slave (2013)
85th Academy Awards: Argo (2012)
84th Academy Awards: The Artist (2011)
83rd Academy Awards: The King’s Speech (2010)
82nd Academy Awards: The Hurt Locker (2009)
81st Academy Awards: Slumdog Millionaire (2008)
80th Academy Awards: No Country for Old Men (2007)