I’ve updated the statistics and the i spent the rest of the day figuring out how the new plot.ly v2 works. You can see it in action on this page (beware, it takes a bit to initialize so be patient).

Days spent scanning the archive: 314
Average number of items scanned each day: 22.65605096
Average surface scanned each day: 2719.433121 cm2
Average raw file size produced each day: 1.838868373 GB
Average file sizes posted online each day: 10.21929678 MB

Counting 1111 days since the start of the project (20131111) it looks like, for the last three years, almost every three day i was doing some scanning.