I would think a line graph, with a different colored line for how each bracket started out, would effectively show that information.

A survey would be more effective…seeing that social status/class is subjective or difficult to define objectively. Your way could be represented many ways by a bar graph… You would have to focus and define what information is viewed…Or you could use a three dimensional or more graph. A graph that can be viewed by multiple dimensions would be interactive and very complicated… You can even make a stand inside model… Or a computer model in where you pick one fixed variable at a time and changed time or wealth or some other variable. I would like to see that.

A graph showing the distribution of wealth at a moment in time would be a two dimensional graph. To show how this distribution changes over time would require another dimension and might look something like this

You could have a regular line graph moving from left to right and going upwards. But then, instead of just showing blips on the graph, you could have a little graphic that is a group of people. And the group of people would get bigger or smaller (it doesn’t have to be the exact amount of people, just an interesting graphic of a group of people that you can draw yourself or get from a free clip art site).