There's several issues here though:

1. For most people symptoms are so minor that they don't go to the hospital at all and don't get counted in the reporting stats. This means that the 18% number is higher than reality. How much higher we don't know.

2. The disease disproportionately affects older people: If you're between 0-50 your chances of dying are ~0.2%. From what I can tell these mortality odds are better than if you have the regular flu.

https://www.worldometers.info/coronavirus/coronavirus-age-se...