Implement something that would track how likely a given release date is by looking historically to predict the accuracy of the estimation.

JIRA has the data:

• Past accuracy estimates for each project / component / developer
• Estimates of un-resolved issues
• Release dates
• GreenHopper adds the ability to track holidays in the given timeframe
• Etc.

A chart or table showing the liklihood of hitting the release date is ___%.