CREATE TABLE table_6543 ("Year" FLOAT, "Men's singles" TEXT, "Women's singles" TEXT, "Men's doubles" TEXT, "Women's doubles" TEXT, "Mixed doubles" TEXT)

Name the total numbe rof years for gaby weissen mireille kosmala
SELECT COUNT("Year") FROM table_6543 WHERE "Women's doubles" = 'gaby weissen mireille kosmala'
SELECT COUNT("Year") FROM "table_6543" WHERE "Women's doubles" = 'gaby weissen mireille kosmala'