Cluster analysis to create asset index

Hello i am new to the forum

I was wondering if any of you Stata geniuses could be so kind as to help me.

I am attempting to use the command cluster kmedians $assets, k(5) to create an asset index. ($assets refers to a sum of durable assets (tv, radio etc) which are binary variables).
Ideally it should come out with 5 quintiles each referring to different levels of socioeconomic status.
i.e 1 = 0-3 assets
2 = 4 assets
3 = 5-6 assets
4 = 7-11 assets
5 = 12 - 22 assets
Yet it is distributing them evenly with each cluster having the same number of assets.

If anyone can help me it would be most appreciated.

Thanks in advance