query: SELECT ?item ?itemLabel (YEAR(?point_in_time) AS ?year) WHERE {
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
    ?item wdt:P3450 wd:Q832052.
    OPTIONAL { ?item wdt:P585 ?point_in_time. }
  }
  ORDER BY desc(?year)