Again, you're completely ignoring the main points of information demonstrated in this data. The data goes back 500,000 years and your concerned that the last 100 years isn't included.
For clarification, this is not my graph and not my data. For me to take credit for it would be plagiarism.
It seems that we disagree on the influence of human activities on global warming. These human activities mainly occurred in the past 100 years and not in the previous 500.000 years. In the past 100 years the CO2 levels went up from 300 ppm to above 400 ppm.
You are correct, we do disagree. Yes CO2 levels have increased but CO2 levels don't drive the temperature change. It's been shown to be a result of the temperature change and not the driver of it.