CREATE TABLE table_45531 ("Rank" FLOAT, "City" TEXT, "Province" TEXT, "Date of Official Foundation of Municipality" FLOAT, "2006" FLOAT, "1996" FLOAT, "1986" FLOAT, "1976" FLOAT, "1966" FLOAT, "1956" FLOAT)

What is the total number in 2006, which has an official foundation of municipality of 1918?
SELECT COUNT("2006") FROM table_45531 WHERE "Date of Official Foundation of Municipality" = '1918'
SELECT COUNT("2006") FROM "table_45531" WHERE "Date of Official Foundation of Municipality" = '1918'