I more useful graph, would be a pie-chart, showing the total amount of natural CO2, with the total broken down, with the percentage which was naturally released, and the percentage which produced by human activities, for say, a any specific year.
I believe either of you would have hard time finding such chart. It can be done, but, it is not easy. . . and? That should, by itself, tell you something.
I have, at various times, found these charts, conveying the percentage of naturally produced CO2 versus CO2 produced by human activity, but? Given how hard it is to find such pie-charts, and given what these pie-charts demonstrate? These should, for any critical thinker, be all you should need to finish this discussion.
If it isn't? The the monopolistic and powerful funding sources that corrupt the science of this planet and media have done on number on you, in most likelihood, and you are not using your critical faculties.