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BISD Effective Tax Rate Worksheet 2023 (PDF) BISD Effective Tax Rate Worksheet 2022 (PDF) BISD Effective Tax Rate Worksheet 2021 (PDF) BISD Effective Tax Rate Worksheet 2020 (PDF) BISD Effective Tax Rate Worksheet 2019 (PDF) BISD Effective Tax Rate Worksheet 2018 (PDF) BISD Effective Tax Rate Worksheet 2017 (PDF) BISD Effective Tax Rate Worksheet 2016 (PDF) BISD Effective Tax Rate Worksheet 2015 (PDF)
