SpaceX is often called a "commercial" company and participates in NASA's Commercial Crew Program. In SpaceX's early days, all of SpaceX's revenue came from non-government sources. But today, SpaceX is very similar to other NASA contractors in that it has several government contracts.
How "commercial" is SpaceX as measured by the fraction of historical revenue from non-government contracts to total revenue over the life of the company?
Update: I would be open to other ideas regarding a better metric for being "commercial." Perhaps something like the summation of historical earnings before interest, taxes, depreciation, and amortization (EBITDA) for example.