Updated data and cost payroll calulcation
removed deubgging statements
Merge pull request #43 from briandrawert/payroll_fix

Payroll fix
Change of the mean rate of return
Merge pull request #44 from briandrawert/payroll_fix

Change of the mean rate of return
New files updated from Brian
JSON change for historical data
adjusting the unfunded liability with IRR
Merge pull request #45 from briandrawert/payroll_fix

adjusting the unfunded liability with IRR