Guessing long-term trend from short term data may not be the best idea. There are too many random influences on the one hand (particular products, competing products (e. g. many people (e. g. students) buy only limited amount of gadgets per year, hence useful and affordable tablets may result in not buying a new camera THIS YEAR... and it may be similar for many people at the same time), temporary economic fluctuations and particular impacts on groups of potential buyers and on the other hand the market with camera systems may express extreme momentum due to large volumes of (especially) lenses accumulated. The manual focus SLR cameras were produced in larger numbers more than a decade after the AF cameras started to be produced, hence the mirrorless cameras are unlikely to replace the DSLR much more quickly (except the entry-level market).