CREATE TABLE table_2004733_2 (population__2000_ VARCHAR2, barangay VARCHAR2)

How many people lived in san gabriel in the year 2000?
SELECT COUNT(population__2000_) FROM table_2004733_2 WHERE barangay = "San Gabriel"
SELECT COUNT("population__2000_") FROM "table_2004733_2" WHERE "San Gabriel" = "barangay"