Worked on expanding the Indicator 3 dataset within the armstat/sdg-data-armenia repository, focusing on enhancing data coverage to support more robust analytics and reporting. The approach involved adding two new CSV files containing extended yearly data and additional fields, specifically increasing coverage for the years 2007, 2009, 2016, 2022, and 2014 through 2023. Demonstrated disciplined data management and data entry practices, ensuring all changes were traceable through structured version control and reproducible uploads. The work addressed the need for richer, more reliable datasets, leveraging CSV as the primary data format and emphasizing accuracy and transparency in data engineering processes.