This type of chart works best if you want focus on the breakdown of the total into different categories. For example, if you want to show that electric cars are still only a tiny fraction (<5%) of all registered cars. That's what's called a 'part-to-whole comparison'. (2/3)

Pro #dataviz tip for stacked area charts: it's usually a safer bet to place your smallest categories at the bottom of the chart. (3/3)