CREATE TABLE table_23512 ("No." FLOAT, "Barangay" TEXT, "Area  ( in km 2  ) " TEXT, "Rank" FLOAT, "Population  ( 2000 ) " FLOAT, "Population  ( 2007 ) " FLOAT, "Population  ( 2010 ) " FLOAT, "Population Density  ( 2010 ) " TEXT)

How many people lived in san gabriel in the year 2000?
SELECT COUNT("Population (2000)") FROM table_23512 WHERE "Barangay" = 'San Gabriel'
SELECT COUNT("Population (2000)") FROM "table_23512" WHERE "Barangay" = 'San Gabriel'