probably it means the .001% of the avalaible supply of BTC at that time (snapshot).
Actually there are 13,105,025 (coinmarketcap data) so the 0,001% is 131,05. With that amount of btc you would get 190k stellars, and with 0.001 btc you would get 1,45 stellar in this scenario.
You switched from american commas to European commas half way through your post.
And then back again and then again.