• SLM average net profit margin for 2023 was 14.75%, a 49.93% decline from 2022.
• SLM average net profit margin for 2022 was 29.46%, a 42.61% decline from 2021.
• SLM average net profit margin for 2021 was 51.33%, a 80.3% decline from 2020.

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