SVG circle element is not rendered in pdf

Expected to see green circle

<?xml version="1.0" encoding="UTF-8"?>
<svg width="50px" height="50px" viewBox="0 0 50 50" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <g stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
        <circle fill="#3F9300" cx="25" cy="25" r="13"></circle>
    </g>
</svg>