I’d evaluate up to ten per year but typically only do 2-3 as well, primarily US East Coast. Fairly consistently, starting in 2015? 2016? the minimums kept creeping up, until a prospective CEO told me I'd wasted his time (he'd contacted me) when I said 25k was my limit.
I may return to it at some point but it wasn't particularly lucrative and the sense of entitlement I ran into just turned me off.