

I read somewhere the US both has a really high incarnation ratio (as in amounts of prisoners per x citizens) and a high percentage of externally employed prisoners. Interestingly those stats where compared to Russia (Siberian labour camps) and China (Uyghurs in forced labour).
Might be even less depending on your produce, also keep in mind that farmers don’t have the same costs every year nor the same yields. A bad year can totally finish them in a bad economy.