Quite possibly less. Aircraft were cheaper and more specialized, while air forces were larger in the heyday of the MiG-21. Modern air forces are based off one or two core multi-role aircraft now. Until you get to some of the late model J-7s with the new wing, Fishbeds lacked range, payload capacity, and just plain old number of hardpoints to do much more than hurl a couple of IR missiles at an attacker (not all Fishbeds carried cannon either). They had about the light attack capability of an advanced trainer - using the gunsight to aim unguided rockets.
the phrase "multi-Role' is more of a buzzword than an actual 'thing'. even in the sixties and seventies (the heyday of the MiG-21), interceptors were doing ground attack, ground attackers were doing air superiority, and so on.
Most of the combat flying hours logged by the F-5 were in ground support missions, and that's a plane with a similar warload, slightly smaller size, and so on as the MiG-21, both of which were initially intended to be short duration interceptors.
as was the original RFP for the F-16, and the F-15 was intended to be air-superiority and bomber interception, but with the E version, became a bomber. The F-111 was intended to be all 'multirole' and took until the G model before it functioned in ANY role...at all.
