Prices and Expenditures Consumer Price Index Yellowknife CPI data tracking inflation for goods and services. Community Price Index Price index comparing the cost of goods and services across NWT communities. Living Cost Differentials Federal isolated post living cost differentials by NWT community. Household Expenditures Average household spending by component for Canada and Yellowknife. Northern Market Basket Measure Northern poverty estimates using an adapted Market Basket Measure for the NWT.