What good is wealth if you don't have your health? It's an excellent question, and one where we already have the answer:
"The first wealth is health."
Ralph Waldo Emerson
On this page, you'll find DQYDJ's research and tools for health and body composition. See the distribution of height or weight, or even the breakdown of BMI and the more esoteric FFMI. These posts will help you understand the first wealth, and (perhaps) inspire changes to your lifestyle.
Height and weight are prominent physical characteristics, but it's a little harder to know how they're distributed. These tools break down height & weight percentiles, including along age lines.
More critical – although less popular to measure – than height and weight is body composition. By crossing height with weight (or vastly improving the measure with an estimate of lean mass using FFMI or body fat percentage), you can get a better reading on health status.