Potassium output per year

1,33 kg of potassium (K) is what our personal average output per year. 

By the way, most of the K is in our urine (75%) compared to only about 25% in our feces. Therefore urine-diverting toilets can be a great method to harvest potassium from humans. 

Source: https://www.permaculturenews.org/2011/11/27/urine-closing-the-npk-loop/