Is this "per day" or really "per month"?

It's a mistake. This is per month. Apologies, Dr. Weigle.

Minor comment: Look into how to format the numbers in the tooltips (e.g., adding commas)

Nice job on customizing font sizes and the look of the chart.

Legend isn't needed since you have the labels on the y-axis.

Consider using SI formatting for the x-axis values to avoid having to turn the labels

Nice job on the tooltips!

This is fine, but showing the percentage unemployed would have made the similarities easier to see.