Puerto Rico felt economic boom of the post Second World War years, and this boom was also evident in its universities. Puerto Rican youth registered in Puerto Rican universities in record numbers, and the Fraternity, which acted as the suppliers of the union between its young people and an escape from arduous studies, also offered student housing. During the next two decades, Sigma enjoyed extensive enrollment in the original chapters as well as the new ones that were beginning to develop. While the baby boom effect declined dramatically in the late 1970s /early 1980s, it resurged at the end of the 1980s, and continuing until the beginnings of the 1990s.