However, even though these privacy options have been around since 2018, the volume data suggests the penetration of CoinJoins has not increased much since the early days. Although more bitcoin has been CoinJoined each year, the highest volume month was just over 65,000 BTC in January 2021 (worth about $2.3 billion, on average), a scant 0.35% of the total bitcoin transacted in that month.
Source: https://www.coindesk.com/layer2/privacyweek/2022/01/25/how-popular-are-crypto-mixers-heres-what-the-data-tells-us/