• SLM average return on investment for 2023 was 5.89, a 36.53% increase from 2022.
• SLM average return on investment for 2022 was 9.28, a 44.56% decline from 2021.
• SLM average return on investment for 2021 was 16.74, a 75.66% decline from 2020.

Roi - return on investment can be defined as an indicator of how profitable a company is relative to its assets invested by shareholders and long-term bond holders. Calculated by dividing a company's operating earnings by its long-term debt and shareholders equity.