what is the {point in time} for {Baja California} has {population} as {48327.0} ?
At what point in time Baja California had the population of 48327 people?
SELECT ?value WHERE { wd:Q58731 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x,'48327.0')) . ?s pq:P585 ?value}
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q58731> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1082> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <48327.0> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

When was it that Baja, CA had a population of 48327 people?