1 ppm of C02 ~ 2.13 gigatons of carbon, which is ~ 7.8 gigatons of CO2. (1) We add about 43 gigatons of CO2 to the atmosphere per year 55% of which is absorbed by natural sinks. We're definitely not adding 26 ppm of C02 to the atmosphere each year.

1.https://skepticalscience.com/print.php?r=45