The gain or loss to the Government on life annuities is only reflected in any variation in the actual mortality experience of the lives involved as compared with the mortality basis of the tables on which the annuities are granted. It is not possible to give figures of profit or loss for individual years. Periodic investigations are made into the mortality experienced amongst the annuitants, and the tables are revised in conformity with the results disclosed. The results of the last investigation were published in 1912 (Cmd. 298–1912), and a further investigation is at present proceeding, the results of which will be reported to Parliament in due course.