There are a few particular problems with this, and that is you're thinking like a first worlder.

What we consider developing nations can quite often just go without these items. Economies in these countries can have rapid swings that cause massive changes in consumption. Shortages of medicines in one year can massively increase child deaths in the first year, where as the next 5 years don't have an issue with that.

With the last one, maybe there is a tik-tok trend that makes beans popular for a year, and then it dies out and half as many beans are consumed. This also isn't counting the average calorie consumption in a country. 10 cans of beans in the US might feed 20-30 people in another country when supplemented from locally grown items.

Shit's hard, yo.