A user can interact with more than one repo in a month, and hence more than one language, so we shouldn't expect the percentages in the table to sum to 100. In fact they sum to about 106, which is pretty close. Does this mean few people use more than one language?

Probably many users do nothing in a typical month. How do the results change looking at yearly active users instead?

Edit: Similarly, the "Percentage of MAU" in the charts isn't percentage of active users each month, but rather the percentage of all registered users, correct?