Since the MCU started it's been so far
2008: Iron Man, Incredible Hulk, & Punisher War Zone.
2009: X-Men Origins Wolverine.
2010: Iron Man 2.
2011: Thor, Captain America the First Avenger, X-Men First Class, & Ghost Rider Spirit of Vengeance.
2012: Avengers & Amazing Spider-Man.
2013: Iron Man 3, Thor the Dark World, & the Wolverine.
2014: Captain America the Winter Soldier, Guardians of the Galaxy, Amazing Spider-Man 2, & X-Men Days of Future Past.
2015: Avengers Age of Ultron, Ant-Man, & Fan4Stick.
2016: Captain America Civil War, Dr. Strange, Deadpool, & X-Men Apocalypse.
2017: Guardians of the Galaxy Vol. 2, Spider-Man Homecoming, Logan, & Thor Ragnarok.
2018: Black Panther, Avengers Infinity War, Ant-Man and the Wasp, Deadpool 2, & Venom.
If not for New Mutants and Dark Phoenix Delays this year would had been it.