a) Retention by activity
qualifies if there has been an activity in the past 2 months.

That means the retention of the current year will always be higher than retention of the previous years, because it includes current activity of recently onboarded users. Maybe this stat should not take into consideration users onboarded in the last 30 days? Since they are new, we can't really talk about "retention" in their case yet.

Super retained is an account that qualifies for both.

Thanks for clarifying this. It was the thing most unclear to me from everything on the chart.

Thanks for all the explanations! Appreciate it!