F Since early 2000s or so up until 2018 or so. During that time, right after F-16 procurement ended, there was perhaps 70 planes procured per year. F-22 and Superhornets. Later on, F-22 production ended and F-35 production started. Superhornet production went down per year. So it was only recently that US started procuring almost 90 F-35 per year (and some Superhornets on top of that) that we can talk about US overtaking Chinese production.
Chinese procurement during that period was pretty steady actually. 20-30 flankers per year, 30-40 J10s per year, 20-ish JH7s. Later on JH7 procurement ended and H6 bombers were procured, around 10 or so per year. J10s possibly went little over 40 in some years. J20 evidently started getting procured half a dozen or a dozen per year lately.
So i'd say China procured some 75-85 combat planes per year during that period, with the higher number being the approximate current production.
As to when will it Chinese production surpass the US one - i don't think anyone knows. F-35 procurement is going up still, it'll go over 120 for the US per year within just a few years. Some say it will even reach 160 in certain years but those aren't signed contracts so who knows. Superhornet production is still ongoing, even though at small figures. It may very well cease by the time F-35 goes over 120 per year. But F15 procurement for USAF will happen at some small quanitities. But still, perhaps a dozen per year for some years ? And then we're probably looking at a dozen B21 bombers per year from 2025 onward.
So i don't think US procurement will drop under 130 planes per year before 2035 or so. Obviously, that's so far into the future that it's silly even trying to predict that far.