- Linear trendlines are now only displayed for the top three formats (in bold), in order to declutter the chart a bit. Also, new this year, is the "None" line - which includes those saying they don't use any lossy format at all.
- Bear in mind there was no poll in 2015.
- "None" had some 'interpolation' done to it, for the simple reason the question wasn't asked every year.
As usual, a small disclaimer of sorts:
Such polls, as common sense dictates, do not purport to be the general public's lossy format usage, but HA members' own (those who cared to vote, that is).