 
    </div>

    <pre class="usage"><span class='fu'>who_nrevss</span>(<span class='kw'>region</span> <span class='kw'>=</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/c'>c</a></span>(<span class='st'>"national"</span>, <span class='st'>"hhs"</span>, <span class='st'>"census"</span>, <span class='st'>"state"</span>),
  <span class='kw'>years</span> <span class='kw'>=</span> <span class='kw'>NULL</span>)</pre>
    
    <h2 class="hasAnchor" id="arguments"><a class="anch