 
 <translate> To answer the question, consider the following: It became their first hit after being released as a single in 1972, topping the US R&B chart and peaking at number three on the US Pop chart.
So, the final answer is 1972. <ibo> Iji zaa ajụjụ ahụ, tụlee ihe ndị na-esonụ: Ọ ghọrọ abụ mbụ ha na-abụ mgbe e wepụtara ya dị ka otu abụ na 1972, na-eduga na chaatị US R&B ma na-eru n'ọkwá nke atọ na chaatị US Pop. Ya mere, azịza ikpeazụ bụ 1972. 