Because the female Ghostbusters reboot was a smash hit! :P
Exactly right.
http://www.boxofficemojo.com/movies/?id=ghostbusters2016.htm
Production Budget: $144 million
Total Lifetime Grosses:
Domestic: $128,350,574.....56.0%
+ Foreign: $100,796,935.....44.0%
= Worldwide: $229,147,509