The Senior National Championships have been held on a yearly basis since 1978 with South Australia reigning supreme from 1985 through until 1996 when Victoria defeated them for the first time in the final for 12 years; a monumental win for Victoria and an end to a 12-year awesome victory stretch by South Australia. In 1970, the first Under 16 National Championship was held and in 1982, the first U19 interstate match was played between South Australia and Victoria at the Senior Nationals in Adelaide. At present, the main centres for lacrosse are in Melbourne, Adelaide and Perth, with each city hosting multi-division club competitions in their respective metropolitan areas. Each of these cities have State League competitions for both men and women, which attract overseas players (the majority from the United States) who are hosted by local clubs to help strengthen their teams as well as develop junior lacrosse programs. The majority of teams, both senior and junior, in lacrosse competition throughout Australia are club teams, with a small few school and university teams that participate in club competition. Interstate competition, a legacy from the time when Australia consisted of its separate colonies, is a feature of many sports in Australia, lacrosse being no exception. Competitions are typically held as an annual week-long carnival, with the venue rotated between states. The "Nationals" are a highlight of the Australian lacrosse calendar, and feature the best lacrosse talent in the country with games played to a very high standard. The first ever Interstate (then Intercolonial) match in Australia took place in Brisbane in 1887, with New South Wales defeating their hosts Queensland by 1 goal to nil. In 1888 Victoria defeated South Australia 5 – 1 at the Melbourne Cricket Ground in the first match between these two colonies. In 1910 the first Australian interstate lacrosse carnival was held at the MCG. At the senior and under 18 age level, each state sends its select representative team. At under 15 level, a national tournament exists whereby member states send anywhere between one and three representative teams, in an effort to level out the competition between stronger and developing lacrosse regions. At present there are national carnivals at the senior, under 18 and under 15 levels for both men and women. Often a number of these events are held concurrently at the same venue. The Australian Lacrosse League was introduced in 2004 to replace the senior men's national carnival by instead having state teams play each other twice, with double-headers (a Saturday and Sunday game) played over three weekends. Each state hosts one double-header and travels for the other.