It appears that, to get access to 12+ months of usage information by scenario and day, I would need to upgrade to Enterprise (and increase our annual fees from £4K to £18K). 30 days is not enough when you have a very seasonal business and showing 60 day average (via the available API payload) does not show usage based on demand spikes. It seems like an odd omission in functionality for a platform which otherwise delivers excellent functionality for SMEs such as our business. The "build your own data via scenarios" method, using BigQuery would require so many operations that it would become a significant expense, unless someone can share a tried and tested efficient method.