The world population is estimated to be about 7.502 billion as of summer 2017 (give or take a few hundred million). According to an estimate by the United Nations Population Fund, it reached the 7 billion milestone in October, 2011 and is expected to reach 8 billion in 2023. Canada's current population  of 36,286,400 (July 2016 estimate) is roughly 0.5 % of the global total.  At the current rate of population growth, it takes roughly 5 months to add to the global total a population the size of Canada's.