Rebecca Rubin Film and Media ReporterNorth American box office revenues in 2020 hit a 40-year low, struggling to reach $2.2 billion in total amid the coronavirus crisis. Movie theaters were forced to stay closed for a significant portion of the year beginning in late March and struggled to recover when some cinemas were able to reopen months later in August.That resulted in an 80% year-over-year decline from 2019, according to Comscore.