But then why look at total per year. Calculate the cumulative total since the start of the industrial revolution. That number is relevant for the situation we're in today.
It's somewhat useful to know how much we did in the us but you can't go back in time and change what the us did from 1900-2000. I don't get the point. We can all only change what we emit now and into the future.
Here is the list of top CO2 emitting countries:
from https://en.wikipedia.org/wiki/List_of_countries_by_carbon_di... , which cites the source https://ec.europa.eu/jrc/en/publication/fossil-co2-emissions...