The first championship was held during the summer of 2000.

The next championship for women will be held in 2011.

The women's championship was held in most of those years.

The championship was not held again until the 2007-08 season.

The women's first national championship was not held until 2010.

These championships have been held every four years since 1978.

The national championship for high school students is held every July.

In 1944 and 1945 no championships were held at all.

No championships were held in the years 1970 and 1971.

From 1951 to 1954, the championships were held during the summer months.