Here is an interesting NOAA video which shows the change in carbon dioxide over time on Earth for two spots, Mauna Loa and the South Pole. Then it goes back further in time using data from ice cores all the way back to 800,000 years ago. Be sure to watch all the way to the end, since there are a couple of brief stops while the graph changes scale.

https://www.esrl.noaa.gov/gmd/ccgg/trends/history.html

Source: NOAA ESRL