The Cowboys joined the NFL as a 1960 expansion team. The team’s national following might best be represented by its NFL record of consecutive home sell-outs. The Cowboys’ streak of 160 sold-out regular and post-season games began in 1990, and included 79 straight sellouts at their former home, Texas Stadium, and 81 straight sell-outs on the road. The franchise shares the record for most Super Bowl appearances (8) with the Pittsburgh Steelers, corresponding to most NFC championships (8). The Cowboys are the only NFL team to record 20 straight winning seasons (1966–85), in which they only missed the playoffs twice (1974 and 1984), an NFL record that remains unchallenged. An article from Forbes Magazine, dated July 15, 2013, lists the Cowboys as the second highest valued sports franchise in the United States behind the New York Yankees of Major League Baseball, and fifth in the world, with an estimated value of approximately $2.1 billion. They are also the wealthiest team in the NFL, generating almost $269 million in annual revenue.