I only represent the campaign in a year where it was started, if I do include the campaign into the next year, it will ruin the beginning pay rate of the project want to pay their participants since I calculate with different Bitcoin price. Also it will make a confusion and not good for readers to read a complex calculation. But you're not entirely correct Chipmixer will represented in every year because when they change their pay rate from 0.0375 BTC to $300, if Bitcasino still pay their participants with 0.018 BTC/week, they're the biggest paying campaign now.
There were campaigns that at some point were paying ridiculously high rates when compared to when they started.
For instance, Yolodice. In January and February of 2021, the campaign was paying 800 USD a month if we count the average price in those months at 35k USD, but that was after they lowered the rates.
Until the end of December 2020 they were paying 0.014 BTC a week @20k USD per coin, which was 280 a week (1120 USD a month!).
According to the OP the pay rates at the time were between $100 and $360 a month.
Here's a spreadsheet if someone wants to verify.
https://docs.google.com/spreadsheets/d/1AaoYn8hm0KV7NQm_f4UNJylN4lxa65rdNpDquhxWz4w/edit#gid=1488910859