Sounds like it was made in 2020.
When Rand Paul says "last year," he is referring to 2019--November 2019, before the onset of the virus.
Have we known this information for that long? Glad it is finally coming out, but why didn't they let us know sooner?
That makes 5,892,674,341 inhabitants of earth who believe this conspiracy theory. The other inhabitants are either (a) members of the Chinese politburo or (b) under five years of age.