D3 Examples - Line Chart: Season of Birth

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path.line {
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.month text {
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.month .line {
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.month .line:hover {
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<div id="content">
    <h1>Why Do Single Moms Have Children in January?</h1>
    <p>New research* has found that women who give birth in different parts of the year tend to have different characteristics. The figure below displays this seasonal variation over the last 45 years.</p>
    <select id="menu">
        <option value="pct_black">Percent black mothers</option>
        <option value="pct_white">Percent white mothers</option>
        <option value="pct_teen">Percent teen mothers</option>
        <option value="pct_unmarried">Percent unmarried mothers</option>
    </select>
    <div id="chart"></div>
    <p>*Buckles, K. S. and Hungerman, D. M. (2013). Season of Birth and Later Outcomes: Old Questions, New Answers. <em>Review of Economics and Statistics</em>, 95(3):711&ndash;724.</p>
    <p>Source: National Bureau of Economic Research, Centers for Disease Control and Prevention.</p>
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<script src="chart.js"></script>
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