I went out and grabbed a report off Google...no doubt you could find other reports with varying numbers, but my 95% came from this global browser usage study posted by OneStat.com:
http://www.onestat.com/html/aboutus_pressbox15.html
Shows Netscape at 3%, globally.
I build Web sites for my company and years ago I paid a lot of attention to Netscape-specific coding to keep the pages looking semi-normal, particularly for NN4.x users. About a year ago I quit doing that, since the % of NN users out there is statistically so low that it just doesn't pay to support the extra effort for a small user base. Our stats show Netscape users at less than 1%, but then, our target audience is primarily corporate folks.