Thank you all for your comments here and also for clarification regarding images. Also interesting to find out about the activity windows system.

DdmrDdmr regarding PWC that's a good point. It may be due to them not hiring blockchain developers in August and July, or them not using the job boards we've been parsing. Will look into this to understand the underlying issue and improve taking this into account when crunching data for September stats.

I'm also working on some geographical distribution reports, for example focusing on California data now. It's interesting to see how some areas have spikes in the numbers of blockchain developers relative to population size.