A couple of simple stats from my (extremely slow) Python block parser:

Checked: Approx 375 blocks (so around 2.6 days).

Joinmarket style transactions found: 152.

So average around 58/day ; similar to what I would have guessed (and I think, did in the past, here).

Max size of coinjoin: 54.17 BTC

Min size of coinjoin: 0.00147 BTC

Median size of coinjoin: 1.25 BTC