There might also be an effect of continuous education hiding unemployment or rather, to put it bluntly, some people who would otherwise be unemployed, hiding in

There might also be an effect of continuous education hiding unemployment or rather, to put it bluntly, some people who would otherwise be unemployed, hiding in the education system. Many of those with high school diploma who are not unemployed are not employed either but are taking part in further education. Similarly, many of those with an undergrad degree are currently in grad school, etc. It would be interesting to compare the employment rates of the various groups as well.