Thanks for the advice. You guys have pointed me in the right redirection.
Are there any stats anywhere on how many addresses without zero balances are in existence?
I've generated a list of all funded addresses for somebody on this forum a while ago... I used this script:
https://github.com/cryptah/utxo-dumpIIRC, at that time, there were ~40.000.000 unspent outputs in the UTXO set, don't remember how many addresses were funded (multiple unspent outputs can fund the same address).
I can only estimate this number to have grown since then (about a month ago iirc)