This visualization shows the number of people born and died in Finland over time, with a hover interaction revealing the population, births, and deaths for a selected year. The chart uses a line graph with two colored paths representing births and deaths, alongside a legend and a data display panel. It is built with D3.js v5, using scales such as `scaleUtc` and `scaleLinear`, as well as `axisBottom` and `axisLeft`. The data is loaded from a CSV file, and rendering uses SVG with mouse events to update the display.