The following links are tables giving the usage statistics of MERIT for 2000 to 2019, this shows that there have been 21,237 participants in MERIT in that time, 14,808 coming from the International Game, 6,429 from University students and from commercial organisations.

Data from the early years prior to 2000 is not recorded in the same detail but as the same staff were overseeing MERIT in these years informed estimates can be made with a high confidence. These estimates indicate participation in the years prior to 2000 to be greater than 10,000 giving a total number of participants approaching 31,300.