While there is probably no statistical information for this, there are definitely obvious links between concept and production vehicles. The strength of the links vary by manufacturer and era however. Styling cues are arguably more commonly linked to production. When budgets and timescales allow, we've seen the technology (especially in interiors) really excel in concept cars; but the vast majority falls away when production concerns such as cost, viability, recyclability and safety are factored in.
Perhaps you might want to pick a couple of brands in particular to profile. Ford made a series of concepts under the 'Probe' name, some of which were produced in some way. Firms like Nissan and Mazda seem more likely to create less dramatic concepts which are more likely to reach production, whereas Peugeot concepts are more conceptual but far less often reach production.