On page 53 of the document, one can find the
Fig. 5.1. Total lifetime risk of cancer incidence per unit effective dose (cases per 100 per Sv: %/Sv) as a function of age at exposure and sex for a range of x-ray examinations (Table 5.4) and for uniform whole-body exposure of a composite Asian population (Table 2.5).
It would be worth having a similar figure for the caucasian population.