It could. That's one way of seeing it, that the public service is growing commensurately with the size of the Canadian population.
Alternatively, one could say that, given that more services are being automated, there could be an expectation that the size of the public service could be growing at a slightly slower pace than the average growth in the population, but I think this boils down to policy choices, especially when the government decides to make interventions, investments or spending in specific areas.