Have you seen Announcing DigitalOcean Graphs!?

I have seen that, I should have been more specific. Is there any way to get this programatically through the API so that it doesn't have to be checked manually each time?

Unfortunately we currently do not offer bandwidth stats via the API. See https://digitalocean.uservoice.com/forums/136585-digital-ocean/suggestions/4325151-expose-graph-data-through-api

You could build your own checker with cURL

Steps:

1 - Access this website.
2 - Log in the system.
3 - Access the area you want
4 - Transform data to json and send to a DB or a json handler server
5 - Check this every hour or so..

I don't think the graphs actually give you any "total" figures do they?