CREATE TABLE table_19667 ("Year" FLOAT, "Mens singles" TEXT, "Womens singles" TEXT, "Mens doubles" TEXT, "Womens doubles" TEXT, "Mixed doubles" TEXT)

Name the year for womens doubles being raina tzvetkova emilia dimitrova
SELECT "Year" FROM table_19667 WHERE "Womens doubles" = 'Raina Tzvetkova Emilia Dimitrova'
SELECT "Year" FROM "table_19667" WHERE "Womens doubles" = 'Raina Tzvetkova Emilia Dimitrova'