The chart displays the US Social Media Ad Cost per Engagement (USD) from 2020 to 2025, illustrating a significant and continuous upward trend in cost over the six-year period. The cost per engagement started at its lowest point in 2020 at 0.50 USD (implied from chart). It then increased to 0.55 USD in 2021, 0.60 USD in 2022, and 0.65 USD in 2023. The upward trend is projected to continue, reaching 0.70 USD in 2024 and peaking at 0.75 USD in 2025. The total projected increase in the cost per engagement is 0.25 USD ($\mathbf{0.75 \text{ USD} - 0.50 \text{ USD} = 0.25 \text{ USD}}$ increase, assuming a starting point of 0.50 USD in 2020). This sustained growth reflects the increasing competition and demand for ad space on US social media platforms.
| Labels | Cost per Engagement (USD) 2020–2025 |
| 2025 | 0.75 |
| 2024 | 0.7 |
| 2023 | 0.65 |
| 2022 | 0.6 |
| 2021 | 0.55 |
| 2020 | 0.50 |
