• Service average operating margin for 2023 was 21.55%, a 17.34% increase from 2022.
• Service average operating margin for 2022 was 26.07%, a 7.42% decline from 2021.
• Service average operating margin for 2021 was 28.16%, a 25.16% decline from 2020.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.