Interest probably surged because of all the media attention to the crash. It's not too surprising after the market bored everyone to death this year. The rise probably isn't indicative of a new wave of adoption.
Last year it had media attention as market was on all time high and this year it has attention because it on lower level for this year. This is how roller coaster ride happens in bitcoin world and so the reward people feels is the best but even the risk involved is the highest. Thus due to fall in value is resulting people attention again and results in the top searches about bitcoin surges.