Kelowna Accord and other INAC externality formula

http://www.ainc-inac.gc.ca/pr/est/rpp08-09/08-09_INAC_planned_e.html
From this budget's 2007-08 forecast spending, tacking on the 2008-09 $138M water/wastewater expenditure, an INAC annual budget of $7.3746B is attained. The externalities in this budget can be used as a guide to estimating the externailities of expenditures such as Kelowna Accord.

I've previously costed these externaltiies line-by-line, but have lost the record. The total positive externalities of the INAC budget came to just under 14%. So I'll use 14% as my externality multiplier baseline for INAC spending increases such as Kelowna Accord, and reaccount the INAC budget if I have time.