Wouldn't call 11% a soar... I would even say it's a disappointing double digit growth, nothing that the first quarter of the year was when the bull slowed down and crypto/Bitcoin started "crashing".
Like hugeblack says, rather symptomatic of a bubble (yes, we did just go past a bubble, admit it). All of these patterns in tandem with other findings: Google searches for Bitcoin trending in the bull and dropping in past six months, while still achieving overall growth; # of new blockchain startups and companies adding blockchain projects, shooting up end of last year/early this year, still showing positive growth today YoY but at a far reduced rate than half a year ago.
Now with the relative stability in prices and the distance from linking to dark activities, the ratio will increase.
Actually, it's when it stabilises that interest drops. Just wait and see what happens when prices inevitably spikes crazily and old news like illegal/illicit use start embracing the headlines again. That ratio will "sky rocket".