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Can't read your charts, but certainly the cost will vary. However, Dashing Scorpio gives the most recent national figures, which I think are close to being correct.
I think your numbers are way off. Have you checked the price of diapers and baby food lately? Medical care? It may not be 304,000 dollars, but it's much more than $50,000.
Good answer Andrew. People should not spend on unnecessary items for the sole purpose of their convenience. If you spend on diapers to throw them away daily it is irrational. Be economic and spend smartly.