The franchise has experienced two major periods of success. The first was from 1976 to 1981, when the Broncos did not have a losing season (a season when the team has more losses than wins), and won two AFC West division titles, and one AFC championship. The second began in 1983 and ended in 1998. During this period, the Broncos had just two losing seasons, were AFC champions five times and Super Bowl champions for two consecutive years. This second period of success is best remembered for John Elway being the team's quarterback. The Broncos have also experienced one notable period of deterioration. From their inaugural season in 1960 until 1975, they did not make the playoffs and had just two winning seasons. They also experienced their two seasons with the most losses ever, winning just