This list is made from the 2012 Sight & Sound poll of best films, combining the top 10s of each decade for the critic and director polls. I compiled the data from this Reddit post. For ties I use Letterboxd ratings to decide the order. I'm not using the full data set so this probably isn't perfect, but it should be very close. The notes give the total number of votes.
The first 5 represent all of the 1800s.
1800s: 1-5
1900s: 6-10
1910s: 11-15
1920s: 16-20
1930s: 21-25
1940s: 26-30
1950s: 31-35
1960s: 36-40
1970s: 41-45
1980s: 46-50
1990s: 51-55
2000s: 56-60
2010s: 61-65
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Status: Complete
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My "Random Ranking" series:
The Essential (Films/Movies) (to See/You Must See) (Before You Die)
Letterboxd 50 All-Time Most Consistently Highest Rated Films
Sight & Sound 2012 Poll - Top 5 Films Of Each Decade
Time to Titles
WatchMojo's Top 20 Greatest Movies of All Time
WatchMojo's Top 100 Movies of All Time