The October 2018 Intergovernmental Panel on Climate Change (IPCC) Special Report increased the Global Carbon Budget for a likely (66%) probability of keeping global temperature increases below the dangerous 1.5 degrees. As a result, we have modified and simplified our charts. The revised carbon budget is 420,000 Mt CO2. Many calculations and charts are still based on the 2014 IPCC report and are biased towards population sharing. (We are working on updating this.)
Population sharing (also referred to as Equity) is the strategy where each country's share of the global carbon budget will match their share of the global population.
Canada's population is approximately 0.5% of the global population so its population share of the global carbon budget is 2,700 Mt CO2e.