A 20% decrease in waste emissions As detailed in the ICTU table (below): Barbados adopts the following ambitious contributions for 2025 and 2030: â 20% reduction relative to business-as-usual emissions in 2025 without international support (unconditional). â 35% reduction relative to the business-as-usual emissions in 2025 conditional upon international support. â 35% reduction relative to business-as-usual emissions in 2030 without international support (unconditional). â 70% reduction relative to business-as-usual emissions in 2030 conditional upon international support.BARBADOS 2021 UPDATE OF THE FIRST NATIONALLY DETERMINED CONTRIBUTION We note that total absolute emissions in the base year (2008) have been restated at 2,123Gg CO2 e. This compares to 2015 NDC inventory emissions at 1,816Gg CO2 e. The absolute emissions reductions resulting from this 2021 NDC update conditional contribution below e (2030) respectively.