Played with updated ATC data on their "2000-miler" page to find completion rates for 2005-2011, an overall average completion rate, and average numbers of thru-hikers to make it to the major milestones. Posted the spreadsheet online, and posted the results at www.laughingdog.com

I was a bit surprised ... Seems I've always heard the percentage of those who drop out by Neels Gap was higher. 50% make it half way, but only 28% finish? And that number seems higher than the one that gets thrown around a lot...