CREATE TABLE table_19671 ("Year" FLOAT, "Mens singles" TEXT, "Womens singles" TEXT, "Mens doubles" TEXT, "Womens doubles" TEXT, "Mixed doubles" TEXT)

HOW MANY YEARS DID MENS DOUBLES PLAYER HEIKI SORGE MEELIS MAISTE PLAY?
SELECT COUNT("Year") FROM table_19671 WHERE "Mens doubles" = 'Heiki Sorge Meelis Maiste'
SELECT COUNT("Year") FROM "table_19671" WHERE "Mens doubles" = 'Heiki Sorge Meelis Maiste'