CREATE TABLE table_203_207 (id DECIMAL, "site name" TEXT, "reason for designation\ biological interest" DECIMAL, "reason for designation\ geological interest" DECIMAL, "area\ hectares" DECIMAL, "area\ acres" DECIMAL, "coordinates & grid ref" TEXT, "year in which notified" DECIMAL, "other designations" TEXT, "map & citation" TEXT)

how many sites were notified after 2000 ?
SELECT COUNT("site name") FROM table_203_207 WHERE "year in which notified" > 2000
SELECT COUNT("site name") FROM "table_203_207" WHERE "year in which notified" > 2000