gBubbleChart: Life expectancy over Gross National Product, Size is Population, Color is Continent

The element which draws the above chart:

<div id="sgvzl_example_query" 
   data-sgvizler-endpoint="http://sws.ifi.uio.no/sparql/world" 
   data-sgvizler-query="SELECT * WHERE{[] w:hasCountryCode ?ID ; w:hasGNP ?GNP ; w:hasCountryPopulation ?Population ; w:isCountryInContinent [ rdfs:label ?Continent ] ; w:hasLifeExpectancy ?LifeExpectancy ; }" 
   data-sgvizler-chart="gBubbleChart" 
   data-sgvizler-chart-options="vAxis.logScale=true|hAxis.logScale=true|bubble.textStyle.fontSize=6" 
   data-sgvizler-loglevel="2" 
   style="width:800px; height:400px;"/>

The results of the query in gTable