In 2010/11, grants accounted for 19.1% of total revenue, by 2015/16, this had declined to 5.3%. By growing domestic revenues at a faster rate than grants are declining, Ethiopia is avoiding zero-sum domestic resource mobilisation, whereby countries do not have scope for higher public spending despite increasing their tax revenue because donors withdraw financial support at the same rate. Annual tax revenue averaged 78.2% and 86.1% of total government revenue and total domestic revenue respectively, between 2010/11 and 2015/16. Since 2011/12, non-tax revenue has been a more important source of revenue than grants although its level has fluctuated.