CREATE TABLE table_12302 ("Year" FLOAT, "Award Ceremony" TEXT, "Category" TEXT, "Nominee" TEXT, "Result" TEXT)

What are the years that had someone nominated for best supporting actress?
SELECT COUNT("Year") FROM table_12302 WHERE "Result" = 'nominated' AND "Category" = 'best supporting actress'
SELECT COUNT("Year") FROM "table_12302" WHERE "Category" = 'best supporting actress' AND "Result" = 'nominated'