How much does it cost to get one year of life from an average citizen? How would one estimate that? Healthcare system does not heal an ill person to 100% of hea

How much does it cost to get one year of life from an average citizen? How would one estimate that? Healthcare system does not heal an ill person to 100% of health, it just tries to prevent death or most ill conditions. I would even argue that it's possible to increase pollutions so more people would die and burden on healthcare systems would be reduced because of that. Weird argument, but still.