[ajross]

Come on. Extremely mildly down-sloping if at all, and without anything like an inflection point that would justify "WTF Happened in 2007?"

You can't do this like this. I mean, you sort of can if the effect is big enough (c.f. the 1971 site which inspired this one, and which makes a much better case). But if you can't eyeball a very clear angle in the chart without argument, you need to come to the table with some kind of fitted curve and real research.