primary energy supply Resources - Crude</span></span>
<span><span class="co">#&gt; 2      GB 2000      Supply Total primary energy supply    Resources - NG</span></span>
<span><span class="co">#&gt;   Product E.ktoe</span></span>
<span><span class="co">#&gt; 1   Crude  50000</span></span>
<span><span class="co">#&gt; 2      NG  43000</span></span></code></pre></div>
<p><code>Country</code> and <code>Year</code> contain only one value
each, <code>GB</code> and <code>2000</code> respectively. Following
conven