The estimates begin in the baseline year of 1990 and are updated annually to incorporate the most current yearâ€™s emission estimates, and to incorporate methodological improvements in calculations as a result of our most up-to-date knowledge.
Les estimations dÃ©butent en 1990, lâ€™annÃ©e de rÃ©fÃ©rence, et sont mises Ã jour annuellement afin dâ€™inclure les estimations de lâ€™annÃ©e la plus rÃ©cente, ainsi que les amÃ©liorations Ã la mÃ©thodologie de calcul qui rÃ©sultent de lâ€™Ã©volution des connaissances.