CREATE TABLE table_19663 ("Year" FLOAT, "Mens singles" CLOB, "Womens singles" CLOB, "Mens doubles" CLOB, "Womens doubles" CLOB, "Mixed doubles" CLOB)

Name the number of years for womens doubles being diana koleva emilia dimitrova and jeliazko valkov
SELECT COUNT("Year") FROM table_19663 WHERE "Womens doubles" = 'Diana Koleva Emilia Dimitrova' AND "Mens singles" = 'Jeliazko Valkov'
SELECT COUNT("Year") FROM "table_19663" WHERE "Mens singles" = 'Jeliazko Valkov' AND "Womens doubles" = 'Diana Koleva Emilia Dimitrova'