 Complete the following phrase:  Formed in 1926, the club saw relatively little success in its early years, winning one Coppa Italia in 1962. Napoli then saw increased success in the 1980s, after the club acquired Diego Maradona. During his time in Naples, Maradona helped the team win several trophies, which led to the club retiring his number 10 jersey. During this period, Napoli won their sole league titles, in 1987 and 1990. Following his departure, however, Napoli struggled ficially, and endured several relegations, prior to being re-founded in 2004 by film producer Aurelio De Laurentiis. Under his leadership, the club has stabilized, which has led to renewed on-field success, winning the 2012, 