Interesting looking at the data, the questions always seemed to peek in March. Anyone have insight into that?

A lot of companies don't hire at the end of the year because of holidays breaking up schedules, coupled with strapped budgets by that point. New year starts, budgets are refreshed, everyone is back to work so hiring pipelines can roll again. Get hired in early February, on-board for a couple of weeks, really start to dig into work at the end of February and early March. You don't want to look like you don't know anything, so instead of asking your coworker sitting next to you or just a Slack DM away, you throw a question up on Stack Overflow and hope to get an answer that gets you unstuck.