CREATE TABLE table_21684 ("School" CLOB, "Years of Participation" CLOB, "OCC Championships" FLOAT, "Last OCC Championship" CLOB, "Last Outright OCC Championship" CLOB)

What is the fewest number of occ championships for the team that last won an outright occ championship in 2006?
SELECT MIN("OCC Championships") FROM table_21684 WHERE "Last Outright OCC Championship" = '2006'
SELECT MIN("OCC Championships") FROM "table_21684" WHERE "Last Outright OCC Championship" = '2006'