Well, it’s been a whirlwind couple of weeks in DNA World, what with AncestryDNA reporting that they’d surpassed 6 million testers in their database by November 1, new information from MyHeritage that they have more than 200,000 people in their database, and now 23andMe announcing that they have broken 3 million. We also have an updated estimate for Family Tree DNA, which does not state how large their autosomal database is.
I’ve had to update the Autosomal Testing Growth graph twice already this month, and now I’m doing it a third time!
I’ve also decided to “smooth” the lines a bit. Because of a weirdness in how Excel graphs the data, the lines for some companies have horizontal sections that give the false impression that their databases aren’t growing for long periods of time.
Obviously, it doesn’t make sense that 23andMe’s database had a huge jump in size from February to April 2017 after not growing at all for a year prior. That’s just an artifact of the fact that Excel won’t bend to my will.
To correct for the artifact, I’ve guesstimated the database sizes between “official” data points to give a better impression of how quickly the databases are growing. I’ll be using this format on my DNA Tests page and in future graphs.
As always, feel free to use the graph in presentations to genealogy societies and DNA interest groups.