The 1974 and 1975 seasons saw rapid expansion for NASL. In 1974, eight new teams paid the $75,000 franchise fee and joined the league, although two existing teams folded. The 1974 expansion saw teams on the west coast, giving NASL a national presence for the first time. The west coast expansion was a success, with three of the teams — San Jose, Seattle and Vancouver — averaging over 10,000 fans in 1974. In 1975, five more franchises were added. Two of these five additions — Chicago and Hartford — were in cities that had successful franchises in the Division II American Soccer League, which at the time saw itself as a potential challenger to NASL as the U.S.'s top professional soccer league. The expansions of 1974 and 1975 meant that NASL had grown from 9 teams in 1973 to 20 teams by 1975.