Final energy consumption by fuel type

PREFIX sdmx-measure: <http://purl.org/linked-data/sdmx/2009/measure#> 
PREFIX sdmx-dimension: <http://purl.org/linked-data/sdmx/2009/dimension#> 
PREFIX skos: <http://www.w3.org/2004/02/skos/core#> 
PREFIX property: <http://rdfdata.eionet.europa.eu/eurostat/property#> 
PREFIX geo: <http://rdfdata.eionet.europa.eu/eurostat/dic/geo#>
PREFIX unit: <http://rdfdata.eionet.europa.eu/eurostat/dic/unit#>
PREFIX product: <http://dd.eionet.europa.eu/vocabulary/eurostat/product/>
PREFIX indic_nrg: <http://dd.eionet.europa.eu/vocabulary/eurostat/indic_nrg/>


SELECT 
year(?date) as ?year
sum(?nrg_101a) as ?solid_fuels
sum(?nrg_102a) as ?oil
sum(?nrg_103a) as ?gas
sum(?nrg_105a) as ?electricity
(sum(?nrg_101a)+sum(?nrg_102a)+sum(?nrg_103a)+sum(?nrg_105a)) as ?total

(round((sum(?nrg_101a)/(sum(?nrg_101a)+sum(?nrg_102a)+sum(?nrg_103a)+sum(?nrg_105a)))*10000))/100.0 as ?share_solid_fuels
(round((sum(?nrg_102a)/(sum(?nrg_101a)+sum(?nrg_102a)+sum(?nrg_103a)+sum(?nrg_105a)))*10000))/100.0 as ?share_oil
(round((sum(?nrg_103a)/(sum(?nrg_101a)+sum(?nrg_102a)+sum(?nrg_103a)+sum(?nrg_105a)))*10000))/100.0 as ?share_gas
(round((sum(?nrg_105a)/(sum(?nrg_101a)+sum(?nrg_102a)+sum(?nrg_103a)+sum(?nrg_105a)))*10000))/100.0 as ?share_electtricity

WHERE {
{  
  GRAPH <http://rdfdata.eionet.europa.eu/eurostat/data/nrg_101a.rdf.gz> 
  {
  _:nrg_101a property:geo geo:EU28 .
  _:nrg_101a property:unit unit:1000TOE .
  _:nrg_101a sdmx-dimension:timePeriod ?date .
  _:nrg_101a property:product product:2000 .
  _:nrg_101a property:indic_nrg indic_nrg:B_101700 .
  _:nrg_101a sdmx-measure:obsValue ?nrg_101a .
  }
  } UNION {
  GRAPH <http://rdfdata.eionet.europa.eu/eurostat/data/nrg_102a.rdf.gz> 
  {
  _:nrg_102a property:geo geo:EU28 .
  _:nrg_102a property:unit unit:1000TOE .
  _:nrg_102a sdmx-dimension:timePeriod ?date .
  _:nrg_102a property:product product:3000 .
  _:nrg_102a property:indic_nrg indic_nrg:B_101700 .
  _:nrg_102a sdmx-measure:obsValue ?nrg_102a .
  }
  } UNION {
  GRAPH <http://rdfdata.eionet.europa.eu/eurostat/data/nrg_103a.rdf.gz> 
  {
  _:nrg_103a property:geo geo:EU28 .
  _:nrg_103a property:unit unit:1000TOE .
  _:nrg_103a sdmx-dimension:timePeriod ?date .
  _:nrg_103a property:product product:4100 .
  _:nrg_103a property:indic_nrg indic_nrg:B_101700 .
  _:nrg_103a sdmx-measure:obsValue ?nrg_103a .
  }
  } UNION {
  GRAPH <http://rdfdata.eionet.europa.eu/eurostat/data/nrg_105a.rdf.gz> 
  {
  _:nrg_105a property:geo geo:EU28 .
  _:nrg_105a property:unit unit:1000TOE .
  _:nrg_105a sdmx-dimension:timePeriod ?date .
  _:nrg_105a property:product product:6000 .
  _:nrg_105a property:indic_nrg indic_nrg:B_101700 .
  _:nrg_105a sdmx-measure:obsValue ?nrg_105a .
  }
 }
} 
GROUP BY year(?date)
ORDER BY ?date