Share of renewable energy in gross final energy consumption

PREFIX sdmx-measure: <http://purl.org/linked-data/sdmx/2009/measure#> 
PREFIX sdmx-dimension: <http://purl.org/linked-data/sdmx/2009/dimension#> 
PREFIX sdmx-attribute: <http://purl.org/linked-data/sdmx/2009/attribute#> 
PREFIX property: <http://rdfdata.eionet.europa.eu/eurostat/property#> 
PREFIX geo: <http://dd.eionet.europa.eu/vocabulary/eurostat/geo/>
PREFIX unit: <http://dd.eionet.europa.eu/vocabulary/eurostat/unit/>
PREFIX indic_eu: <http://dd.eionet.europa.eu/vocabulary/eurostat/indic_eu/>

SELECT
bif:either(?geo = geo:DE, 'Germany', ?ugeo) as ?ugeo
bif:either(?date = 'TARGET','Target 2020', bif:either(?date != 'TARGET', substr(xsd:string(?date), 1,4) , ?date)) as ?date
sum(?obsValue) as ?obsValue
WHERE { 
 GRAPH <http://rdfdata.eionet.europa.eu/eurostat/data/t2020_31.rdf.gz> 
  { 
    {
    ?t2020_31 sdmx-dimension:timePeriod ?date . 
    ?t2020_31 property:indic_eu indic_eu:T2020_31 . 
    ?t2020_31 sdmx-dimension:refArea ?geo . 
    ?t2020_31 sdmx-attribute:unitMeasure unit:PC . 
    ?t2020_31 sdmx-measure:obsValue ?obsValue .
    } UNION {
      { SELECT 'TARGET' as ?date geo:NO as ?geo 67.5 as ?obsValue {} }
    } UNION {
      { SELECT 'TARGET' as ?date geo:IS as ?geo 64 as ?obsValue {} }
    } UNION {
      { SELECT 'TARGET' as ?date geo:MK as ?geo 28 as ?obsValue {} }
    } UNION {
      { SELECT 'TARGET' as ?date geo:AL as ?geo 38 as ?obsValue {} }
    } UNION {
      { SELECT 'TARGET' as ?date geo:ME as ?geo 33 as ?obsValue {} }
    }
  }
  ?geo rdfs:label ?ugeo .
}
GROUP BY ?date ?geo ?ugeo ?unit
ORDER BY ?ugeo ?date