This graph Is from Sunday (Dec 19, 2021). The green line is vaccinated and the purple line is unvaccinated. The comments in Alex's blog are also helpful.
The graph from today (Dec 20, 2021) at https://covid-19.ontario.ca/data is slightly different. If you go to check, first click on: (COVID-19 cases by vaccination status) then scroll down and click on: (Number of cases) in the first graph.