For those who don't know, there is rarely a day that doesn't go by when somebody doesn't download a free copy of Blackmarsh from DriveThruRPG. Over 13,000 since its release in 2011. Each order is accompanied by an order number.
As you can see aside from a pandemic-related boost in 2020, the # of orders has seen a slow increase since 2019. In contrast, 2017 to 2019 saw a marked rise in sales, almost doubling.
Finally here is a repeat of the month to month chart showing the effects of the Pandemic on DriveThru numbers.