commodity_id,region_id,year,demand
heat,R1,2020,10
heat,R1,2025,13.3
heat,R1,2030,16.6
heat,R1,2035,20
heat,R1,2040,23.3
heat,R1,2045,26.6
heat,R1,2050,30
heat,R2,2020,10
heat,R2,2025,13.3
heat,R2,2030,16.6
heat,R2,2035,20
heat,R2,2040,23.3
heat,R2,2045,26.6
heat,R2,2050,30