Thanks for posting an image of that chart though. Very interesting. I'd love to go through that chart, but I can't seem to find the original. (The BLS site is notoriously tough to navigate). I enjoy analyzing those numbers, and that one seems interesting.
So why the difference between your graph, and the one released that I linked above? Maybe it's the "seasonally adjusted" business.
The numbers in the graph you posted are very volatile, and probably don't provide much information on their own. For example, looking at your graph, we were losing full-time jobs and gaining part-time jobs just two months earlier. That indicates to me that the fluctuations are such that they don't bother. with the data in the graph you posted.
For example, we could have looked at the graph you posted in March of this year and bemoaned the migration of workers from full-time to part time. But no one did that.