In the CSLS study, the estimate of “excess spending” in any service depended on the following sequence of calculations: 1. An estimate of per capita general spending on the relevant service for the average non- Aboriginal Canadian. [...] In the 1941 Census, only one Aboriginal in 25 lived in a city; by the time of the 2006 Census, one in two did. [...] The first column of Table 2.1 is the PYLL (per thousand population) attributable to various causes of death for the on-reserve population; the second column is the analogous PYLL for the Canadian population; the third is the difference between the first two, by cause of death; the fourth is the relative weight of each difference in the total. [...] The more prevalent a particular cause of death is, and the earlier the average age at which the victim succumbs, the larger the weight of the particular cause in a PYLL calculation. [...] By far the most dramatic difference between the PYLL profiles of on-reserve Indians and the Canadian population is found in the injury category.