I'm after statistics on the number of developers (worldwide, but even within the US would be fine) over time. Obviously, the industry is growing, but by how much? I'd just like to see a graph showing the numbers over the past 5-10 years. Does anyone know where I might find something like this?
With all of the various developer surveys that are around, I thought that this info would be easy to find, but I guess surveys don't deal with broad labour force numbers.