The Met office is predicting a 2.75 part per million CO2 increase for 2019, bringing total atmospheric concentrations to 411 ppm.
While the El Niño years of 2015-16 and 1997-98 still hold the records for the largest annual rise, “the year-on-year increase of CO2 is getting steadily bigger as it has done throughout the whole of the 20th century,” Jones told the BBC. “What we are seeing for next year will be one of the biggest on record, and it will certainly lead to the highest concentration of CO2.”
https://theenergymix.com/2019/01/27/2019-set-to-deliver-big-jump-in-atmospheric-co2/
