How to generate strobiloid graphs

[ASWINI MISHRA]

Dear STATA Users,

Greetings! I have gone through the paper entitled "THE INTENSITY AND SHAPE OF INEQUALITY: THE ABG METHOD OF DISTRIBUTIONAL ANALYSIS"In Review of Income and Wealth Series 62, Number 1, March 2016 DOI: 10.1111/roiw.12161. In this paper Prof. Chauvel has generated strobiloid graphs.I find it to be extremely useful in understanding the structure of inequality.
The strobiloid shows the income hierarchy (on the vertical axis, 1 = median). The curve is larger (horizontal axis) when the density at this level of income is higher: As expected, many individuals will be at the intermediate level near to the median and their number diminishes at the top and at the bottom. Thus, in strobiloids with a larger belly, the intermediate middle class is larger with a more equal distributions.

Here, I have attached an example data, where my objective is to generate a strobiloid for two different data points/periods (represented by X and Y columns), for say 11 individuals.

Observation	X	Y
1	20	21
2	25	29
3	15	14
4	18	20
5	40	35
6	45	60
7	58	65
8	37	40
9	12	18
10	30	32
11	50	58

Can anyone help in generating the strobiloid?

Regards,
Aswini