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In page National Ringette League:

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Over thirty teams have competed in the NRL during different periods of the league's existence.[1] The first NRL season began in November 2004 with 17 teams.[2][3] During the second NRL season in 2005–06, two new teams joined the league bringing the league total to nineteen.[4] The teams were then divided into four conferences. However, during the off season, three teams folded, citing low attendance revenue.[citation needed]