I've been trying to find historical numbers for the Regular Force. My illustrated history of the Canadian Army tells me that at the end of 1952 the regular army had reached 49,000 while reserves stood at 47,000. Found this link to Stats Can numbers that show what I assume to be Regular Force for all 3 services and has the Army at just under 52,000 in 1962
https://www66.statcan.gc.ca/eng/1988/198807190711_p. 21-43.pdf . Interestingly, the 49,000 in 1952 was for a field force of 5 brigade groups. A decade later the Army was almost 3,000 larger but for a field force of 4 brigade groups.
Not sure what that implies when it comes to the current discussion of significant increases in personnel except that even with an armed forces probably at their peace time peak in size we were still thinking in terms of brigades, not divisions (I believe that by '62 1 CDN Division was no longer a thing). Note also the 21,500 in the RCN and 53,000 in the RCAF in '62. As a sidebar, the 1962 numbers are for a population less than half of what we have now, albeit one that was probably much more connected to our military given the number of veterans still living (and serving).