Stacked chart

<svg width="50" height="1000" xmlns="http://www.w3.org/2000/svg">
  <rect width="100%" height="12%" y="0"   fill="green" />
  <rect width="100%" height="17%" y="120" fill="blue" />
  <rect width="100%" height="71%" y="290" fill="purple" />
</svg>