Interesting information.

A couple of things...
Instead of “percent difference” a more useful stast would be “percent change from last month” (the difference between the net number of new posts this month from last momth. Also useful would be percent chance from last year. As boards have more and more posts, each additional 1,000 new net posts will have a smaller impact on the percentage of new posts.

For comparison, it would be useful to also see net new posts in the English sections, possibly split up between the main boards and the altcoin boards. In general, interest in bitcoin rises and falls with prices and with prices way down from the highs in 2017, interest has also fallen, and I would expect the number of new posts to have declined from December 2017.