• SLM average net profit margin for 2023 was 15.9%, a 48.19% increase from 2022.
• SLM average net profit margin for 2022 was 30.69%, a 42.45% decline from 2021.
• SLM average net profit margin for 2021 was 53.33%, a 94.49% decline from 2020.

Net profit margin can be defined as net Income as a portion of total sales revenue.