<chart caption='Colorado Energy Production by Source, 2006' subcaption='Trillion Btu'  plotGradientColor='' formatNumberScale='0' thousandSeparator='' palette='1' >
  <set label="Coal" value="805.7" /> 
  <set label="Natural Gas" value="1300.5" /> 
  <set label="Crude Oil" value="135.7" /> 
  <set label="Renewable Energy" value="41.3" /> 
</chart>
