what is the {point in time} for {Rio Grande do Sul} has {nominal GDP} as {1.15e+11} ?
When was the GDP of Rio Grande do Sul1.15e+11 ?
SELECT ?value WHERE { wd:Q40030 p:P2131 ?s . ?s ps:P2131 ?x filter(contains(?x,'1.15e+11')) . ?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/Q40030> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2131> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <1.15e+11> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

In what time period was Rio Grande do Sul's GDP 1.15e+11?