Zcash fees scale with zcash:native price action.
Over the past 90 days, the chain has generated $250k in fees, a +118% increase over the past 3 months. The peak came on Sep 23, which was right around its recent all time high of $1661.
Fee generation has since slowed over the past month, with the chain pulling in just $78.4k over the last 30 days, however, as privacy continues to become a must have, table stakes requirement for institutional allocators, I'm sure to we'll start to see that number climbing again soon.