CREATE TABLE table_203_33 (id DECIMAL, "conference" TEXT, "date" TEXT, "place" TEXT, "attendance" DECIMAL, "archive of presentations" TEXT)

how many people attended the first wikimania conference in 2005 ?
SELECT "attendance" FROM table_203_33 WHERE "conference" = 'wikimania 2005'
SELECT "attendance" FROM "table_203_33" WHERE "conference" = 'wikimania 2005'