Volumetric ccSN rates as a function of redshift. We compare our ccSN rate (red star) estimate with C99, C05, B08, B09, L11, D12, T14, G15, C15, P20, and F21. The dashed blue line is an SFH model scaled to these ccSN rates, following a power law with β = 4.3, with the dark and light blue regions showing the one and two σ uncertainties of the model, respectively. The inset zooms in on the ccSN rates for the nearby universe (0.00 < z < 0.08).