Average Monthly Accounts with at least 10 edits, all time: 129
Average Monthly Accounts with at least 10 edits, last 12 months: 113
Seems to be a drop in activity centered around 2016 (months 100-120), with relatively stable activity on either side (looking at the rolling average for accounts with at least 10 edits).
About 20% of editors who make 10 edits make 100 edits.
Total number of accounts per month (including ips) is on an overall upward trend, but accounts with 3+ edits is on a downward trend overall. Activity seems to have increased in 2020.
About 40% of all edits have been from accounts that made 300+ edits in the month.
Going by year instead of by month in EditCount, the number of accounts has been increasing fairly steadily year-over-year. Total annual edits has leveled off since 2017. Editing peaked in 2011. The all-time total number of edits is lower according to EditCount than according to Special:Statistics (2,198,949 vs 2,344,260 = 6.2% lower; missing 145,311 edits). This difference is not attributable to missing months in the dataset; it is the equivalent of over 9 months worth of editing.