This visualization displays total suicide numbers by age group for each year across 30 years, using grouped bars colored with the viridis scheme. The chart is built with Vega-Lite API, which wraps D3.js, and reads data from a CSV file loaded via d3.csv. A clickable tooltip, enabled through vega-tooltip, reveals exact suicide counts for each bar segment, while a custom config adjusts font sizes and colors for readability.