Based on this chart PA license sales have dropped 22.5% over 20 yearsas of 2003. I can't find anything updated for '04.
http://www.nssf.org/IndustryResearch/PDF/HistLicSales.pdf
What caught my attention though was the country, as a whole, has only dropped 10% in those same 20 years. Some states doubled their number of licenses in those years.