sgvizler: Getty TGN: year of joining the UN

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/1.9.0/jquery.js"></script>
<script src="https://www.google.com/jsapi"></script>
<script src="http://beta.data2000.no/sgvizler/release/0.6/sgvizler.js"></script>
<div id="ex"
   data-sgvizler-endpoint="http://vocab.getty.edu/sparql.json"
   data-sgvizler-query="
select ?country ?year {
   [] rdf:subject [xl:prefLabel [xl:literalForm ?country; dct:language gvp_lang:en]];
      rdf:predicate gvp:tgn3317_member_of; 
      rdf:object [rdfs:label 'United Nations'@en];
      gvp:estStart ?start.
   bind(xsd:integer(str(?start)) as ?year)}
"
   data-sgvizler-chart="google.visualization.GeoChart"
   data-sgvizler-chart-options="title=Year of joining the UN"
   style="width:700px; height:500px; border:1 solid black; display: inline-block;"></div>

JavaScript

$(document).ready(function() {
  sgvizler.defaultEndpointOutputFormat('json').containerDrawAll();
});