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What is the percentage of hammock stands that are made of wood?
What is the percentage of hammock stands that are made of metal? What
type of metal is it?
What is the percentage of hammock stands that are made of another
material? What materials?

What is the percentage of hammock stands that are single-pole designs?
What is the percentage of hammock stands that are double-pole A-frame designs?

I also need information on hammock stand dimensions. In particular, I
need to know about the part of the stand that touches the ground. Give
me a percentage breakdown of the dimensions. For example, "65% of
hammock stands have a base that is 48-inches by 48-inches. 18-20% of
stands are 48-inches by approximately 72-inches. ..." Please factor in
all kinds of hammock stands for this statistic: metal, wood, single
pole, double pole.

Optional: How many people living in the United States own at least one
hammock? How many people living outside the United States own at least
one hammock?