CREATE TABLE table_78143 ("Code" FLOAT, "Type" CLOB, "Name" CLOB, "Area  ( km 2  ) " FLOAT, "Population" FLOAT, "Regional County Municipality" CLOB, "Region" FLOAT)

Saint-Blaise-Sur-Richelieu is smaller than 68.42 km^2, what is the population of this type M municipality?
SELECT MIN("Population") FROM table_78143 WHERE "Type" = 'm' AND "Name" = 'saint-blaise-sur-richelieu' AND "Area (km 2 )" < '68.42'
SELECT MIN("Population") FROM "table_78143" WHERE "Area (km 2 )" < '68.42' AND "Name" = 'saint-blaise-sur-richelieu' AND "Type" = 'm'