The exception here is the United States. This is because in the US, the healthcare market is the largest sector but unlike in other countries, healthcare is not part of the public sector.
The second largest buyers then are private businesses, such as companies, lawyers, banks, insurances, and in the US also hospitals. We group these under “corporate”.
The third and by far the smallest category are individuals. It is very uncommon for individuals to purchase interpreting services directly, as it is usually the institutions that serve the customers that are the ones that pay. However, there are three countries that have an exception to this rule: