That was over 8 years ago in 2014.
Today he is 70, and has starred in 61 movies in total, 12 since Birdman was released.
In Birdman, I think Michael Keaton looks:
Birdman scores 7.4 out of 10 on The Movie Database.
Michael Keaton's first acting role was as 'Beetlejuice' in Beetlejuice, released in 1988 when he was 36.