Justice League is also coming out this month. I doubt it will do as well as Wonder Woman, Guardians, Spider-Man, Logan, or Thor (it might, but DC has a spotty track record so far), but it will help to push the superhero movies to above 20%.
I did some number-crunching. Here’s a list of the box office take percentage for movies based on either comic books or comic strips for the last 37 years:
1980: 2.1%
1981: 4.6%
1982: 1.9%
1983: 2.2%
1984: 0.0%
1985: 0.0%
1986: 0.0%
1987: 0.0%
1988: 0.0%
1989: 6.0%
1990: 5.2%
1991: 4.4%
1992: 3.5%
1993: 0.0%
1994: 2.3%
1995: 3.4%
1996: 0.0%
1997: 1.5%
1998: 0.0%
1999: 0.0%
2000: 2.0%
2001: 0.0%
2002: 4.3%
2003: 3.8%
2004: 4.0%
2005: 5.7%
2006: 5.7%
2007: 9.2%
2008: 10.1%
2009: 1.6%
2010: 3.0%
2011: 6.3%
2012: 12.5%
2013: 9.4%
2014: 15.3%
2015: 5.7%
2016: 15.7%
2017: 20.4%
Methinks I see a trend....