These are not statistics, my friend. There is only one way to describe your results:
GIGO (garbage in, garbage out)
Your 3.5% growth rate per year is both contrived and exaggerated. You have no reason to assume this growth rate. How long has this growth been going on? Does the population DOUBLE every 20 years? That would mean that in the last 100 years the population increased by 3100%. That means that for every person born 100 years ago, 32 were born this year. Am I the only one who thinks that you are being ridiculous?
Please note that this is your only statistical claim. The rest of your claims are purely made of your own logic. On that basis, I’d like to ask you a question that is also only logical, and not at all statistical. We can get back to cold hard facts if/when you are ready to look at them.
If the average age gap in shidduchim is about 3 years, then at some point all the 23 year old boys must have decided to ignore same-age girls and start marrying 20 year olds. OK, let it be a gradual event. My question is, what happened to the 3 years worth of girls who were skipped when the boys made that decision? Where did they get absorbed? I think they didn’t. I think that these 3 years worth of girls ARE the shidduch crisis. So, these poor girls will just get older and older, but once they are old maids and out of the picture, there will be no more crisis. The crisis is them, THEY will never get off the island, but it’s not because of the age gap, it’s just because they were skipped. Good theory?
Please don’t make the mistake of falling for a theory and then adjusting your model to generate the desired results. Your model would not stand up to peer review.