About 5% but still nontrivial. We can take comfort in the fact that during the same decade the global temperature did nothing statistically significant. A bunch of new CO2, but no new warming. This is despite the fact the solar activity just left the modern maximum and fell around 2007. So it wasn't the sun cooling off because that is too recent and there is a couple year (at least) lag between sun and average temperature (that's because the sun warms the ocean for the most part).
Should we comforted by the fact that we are still dealing with parts-per-million?
Compared to parts per thousand of water vapor? Yes.
Re: “About 5% but still nontrivial.”
I was using your data, up 120 PPM since the Little Ice Age.
I assumed it was up about 100 PPM in 2000, and the 22 PPM in the following decade brought it to about 120 PPM.