If you're not sending in revenue data through the API, or using an external system (like Salesforce) to manage your revenue, you can import your revenue data with an excel import and here is how to do it:
1. go to the quick add menu
2. go to the section for imports and select License Data
3. go to the import template and make a copy.
4. Enter your revenue data into the template. (As ever, this is a dumb file, so please do not change any of the template columns, but feel free to add additional columns at the end if you want to create custom fields)
5. Save your sheet as an excel file, select choose file and upload your revenue data.
6. And as a big short-cut, here is a link to the template.