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- https://www.cbsl.gov.lk/sites/default/files/cbslweb_documents/press/pr/press_20211130_inflation_in_november_2021_ccpi_e.pdf
- https://www.cbsl.gov.lk/sites/default/files/cbslweb_docu-ments/publications/annual_report/archives/en/2007_17_Appendix.pdf