CREATE TABLE table_204_172 (id NUMBER, "year" NUMBER, "representative" CLOB, "hometown" CLOB, "placement in miss nepal" CLOB, "special awards at miss nepal" CLOB, "placement in miss pokhara" CLOB)

what is the total number of years ?
SELECT COUNT("year") FROM table_204_172
SELECT COUNT("year") FROM "table_204_172"