A multi-line chart shows projected US media ad spending from 2016 to 2022 across six categories, including Digital, TV, Print, Radio, Out-of-home, and Directories. Digital spending rises sharply while most others decline or hold steady. Built with D3 v4, the visualization groups data with `d3.nest()`, draws smoothed paths using `d3.line()` with `curveCardinal`, and adds circles for each data point. Axes, labels, a legend, and a title are appended as SVG elements. The data comes from eMarketer, March 2018.