You can find some data on CMC. It shows approx $20M trading volume yesterday, so can project for average monthly using more data points.
The +2% depth and -2% depth data there is also interesting and relevant for this discussion. The depth of these pairs basically means that a 60K STX sell order (average additional per day yield with 1,400 STX) at current price (meaning approx $30K sell order) would just be a blip on the trading market, and just the listed orders would absorb it. Obviously, market conditions change, the depths on these pairs change, crypto markets are volatile etc. But my broader point is that the magnitude of change discussed here is just a blip on the active trading market and we can study historical data to confirm this.