Based on the provided data, the year-on-year variations in percentage are as follows:
- 2024 to 2025: -3.03%
- 2025 to 2026: -3.75%
- 2026 to 2027: -3.25%
- 2027 to 2028: -3.36%
The compound annual growth rate (CAGR) from 2024 to 2028 is approximately -3.35% per year.
Future trends to watch include advancements in renewable energy technologies, stricter environmental regulations, and potential economic shifts that may accelerate the decline in brown coal briquette consumption in Germany. Monitoring these trends will provide deeper insights into the long-term sustainability of brown coal usage in the country.