[Ozark Tom]

One group places odds at one-per-thousand-years on average. Seventy percent of impacts should fall in an ocean producing tsunami with little evidence of a crater.

https://ipfs.io/ipfs/QmXoypizjW3WknFiJnKLwHCnL72vedxjQkDDP1mXWo6uco/wiki/Holocene_Impact_Working_Group.html

[Eurotwit]

But, you are ignoring possible very long orbit meteors.