 Complete the following phrase:  In 1977, sport in the country was reformed, creating professional teams with paid players for each sport. Since then, an annual championship, called the National Championship, has been held September through each year, together with several other competitions each year. These include the Mangyŏndae Prize held since at least 2002 in March through April in honour of Kim Il-sungs birthday, the Paektusan Prize held since at least 2010 in February in honour of Kim Jong-ils birthday, and the Pochŏnbo Torch Prize held since 2010 in May through June to mark the anniversary of the 