what is the {point in time} for {Thirteen Colonies} has {population} as {1980} ?
What is the population of Thirteen colonies in 1980?
SELECT ?value WHERE { wd:Q179997 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x,'1980')) . ?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/Q179997> .
?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> <1980> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

How many people lived in the Thirteen Colonies in 1980?