Based on the provided data, the year-on-year variations in percentage are as follows:
- 2025: 0.88%
- 2026: 0.86%
- 2027: 0.83%
- 2028: 0.81%
Future trends to watch for include shifts in global vegetable oil prices, changes in dietary trends favoring healthier oils, and potential governmental regulations on vegetable oil imports that could affect the projected growth.