Add Box Office property to the Film type?

I assume total gross earnings would be appropriate? I guess it could be similar to the estimated budget. I would like to have a date for the earnings total so a better more accurate comparison of over a century of grosses can be done.

Or is it that more detail is desired?

US-centric: US Domestic & Foreign

By Region: Europe, Asia, North America, South America, Africa, Oceano-Pacific, Antartica

Other?

 

I think the box office is clearer than total gross earnings, because the latter could include DVD sales, rentals, TV rights, merchandising, etc. For example, Pirates of the Caribbean: At World's End domestically made almost as much in DVD sales as with ticket sales: $280 M compared to $310 M.

I guess the world box office would be good, or maybe US as it's the 40% of the world movie market, rest of the world, and world (US + rest of the world). I haven't yet come across a website that breaks it down further that that.

>I would like to have a date for the earnings total so a better more accurate comparison of over a century of grosses can be done.

Do you mean you would like to have the data adjusted for inflation? 

How about adding box office for the country of ORIGIN and world wide? For example, a german movie doesn't often even get to US theatres, their box office would therefor not be very interesting while the german would...