Just found this link, and hadn't seen it posted earlier. The data is for 2009, and according to the NSSF (National Shooting Sports Foundation), the number of hunting licenses sold increased by 3.6 percent.
That's very good news if the trend continues.
Here is a link to the state by state license sales, with $$$ figures also. No surprise, that Texas leads in sales, with Michigan and Wisconsin fighting for a distant second.