It insisted that only us "gun nuts", not e.g. the large number of households that only have one or two guns for self-protection, were buying almost all of these new guns; to review and improve my estimate we'd have to find that particular statistic/study.
Also there are occasional rashes of criminals with phone # to address database access surveying people for firearm and jewelry ownership. Even "innocent" corporate or written/mailed survey data can be assumed to be entered in a computer and that means it is only a matter of when, not if, it'll be stolen/hacked. So if someone has no need to know whats in my safe (aka, absolutely everyone other than immediate family members) then the only intelligent answer about the contents of my safe is no, I own no guns, no collectible coins, no jewelry, and I keep no cash on hand other than $20 in my wallet, and I have no idea why I'd ever tell anyone any other response.
Note that one's willingness to tell an anonymous voice on a phone that one owns guns changes with the political climate towards guns.