It's highly unlikely for your wallet to generate 229,000 private keys if 99% of those aren't used or from multiple wallet files since the default gap limit since then is only 1000.
In 2009, there was no "gap limit", as that's related to HD wallets. There may not even have been a keypool yet (which was later introduced starting with 100 and increased to 1000 addresses).
I did a private key import and it is showing a little over 229,000 or private keys. So I really don't know what to think, most of the private keys have a 0 balance.
"Most"? If that means some are funded, you found what you're looking for.