Here is a graph (from Statista) of the Market Share of Domestic"Light Trucks" sold in the US from 1990 to 2012. Instructively, it color codes the type of truck by body type and/or size. See the key below.
I highlight a portion of of the market share in 1990 and 2013 (in RED) that interested me the most.
I see the rise of the "Suburban Assault Vehicles" (Lt Blue and Purple) for the soccer moms and dads and the decline of the Mini-van era (Green).
You can see by the by 2012 the market for small to mid-sized trucks has become so small they are just a trace of the whole market.
The market share for "Large Trucks" has remained pretty constant at about 28% (give or take).
In terms of this class of vehicles, Americans have emphatically declared: SUPER-SIZE ME!