Whill many people report equipment sales activity to an association there are some manufactures that do not - for example Taylor Machine Works ( key player in the Big Truck market did not up to 2007 - that is when I retired I assume the still don't. Guesstimates of market size becomes a SWAG. Kinda like all those Economist project the future - they general issue more than one forecast and hope one is right or even close. Most are seldom spot on.
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