Industry Reports and Analysis
You want data to make your case as to why gender inequity is an issue? Need to argue how things really are in a given industry? You may find some helpful info here.
Association of Art Museum Directors
In 2014, the AAMD released a report on salary data based on information from 200 members- and the results were precisely as depressing as you'd imagine. In March, 2017, they released a follow-up report, "The Ongoing Gender Gap in Art Museum Directorships." The summary of their report and a link to the full document can be found here. NYT coverage of the report can be found here. Please note this is only about art museums.
Coming soon 2
There's sure to be more headdesk inducing data shortly.
Coming soon 3
So much more data coming.