A much larger program called Bolsa Família has been in place for almost two decades here in Brazil. The findings were smaller but still positive: for every R$1 that went into the program, GDP grew by a calculated R$1,78 [1]

[1]: https://valor.globo.com/brasil/noticia/2013/10/15/ipea-cada-... (original article, in Portuguese and paywalled, can be read here: https://outline.com/SAALuA)