It is actually more complicated than this implies. For example hospitals are often held afloat by Medicare/Medicaid spending (25%/19%). Private health insurance is about 37%, so larger than either, but smaller than both. But then you have to remember that some of the private health insurance is being subsidized by taxpayer dollars (e.g.: the ACA subsidies), and that private health insurance is largely coming from tax exempt dollars (a form of subsidies). So where the costs are actually being paid is more difficult.

https://www.kff.org/health-costs/key-facts-about-hospitals/?...

I am not sure where your question about a percentage of your salary is valid on the face of it. Do you count the employer portion of your medical coverage as part of your salary? Do you count the tax exemption? How do you figure the taxes taken out to support Medicare/Medicaid/Veterans Health (all of which are required to support the system as it exists)? And how do you figure that for single payer systems?

So a much more direct way of comparing is to look at total costs per person, and then figure out how outcomes compare. When you do that the U.S. comes to about double the cost, and generally worse outcomes. Conservative politicians will scream about how long it takes to get procedures, but the research shows that elective procedures take about the same time (and no-one waits for emergency procedures in comparable systems).

https://www.pgpf.org/article/how-does-the-us-healthcare-syst...