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<table class="striping">
  <thead>
    <tr>
      <th colspan="4">Year</th>
    </tr>
  </thead>
  <tr>
    <th>Primary Census Divisions</th>
    <th>2014</th>
    <th>2013</th>
    <th>2012</th>
  </tr>
  <tr>
    <th>Nation</th>
    <td>x</td>
    <td>x</td>
    <td>x</td>
  </tr>
  <tr>
    <th>Region</th>
    <td>x</td>
    <td>x</td>
    <td>x</td>
  </tr>
  <tr>
    <th>Division</th>
    <td>x</td>
    <td>x</td>
    <td>x</td>
  </tr>
  <tr>
    <th>State <a href="#tables-links">[map]</a> <a href="#tables-links">[list]</a></th>
    <td>x</td>
    <td>x</td>
    <td>x</td>
  </tr>
  <tr>
    <th>County <a href="">[map]</a> <a href="">[list]</a></th>
    <td>x</td>
    <td>x</td>
    <td>x</td>
  </tr>
  <tr>
    <th>Census Tract <a href="#tables-links">[map]</a> <a href="">[list]</a> <a href="#tables-links">[interactive map]</a></th>
    <td>x</td>
    <td>x</td>
    <td>x</td>
  </tr>
</table>