CREATE TABLE table_30326 ("Year Location" TEXT, "Mens Singles" TEXT, "Womens Singles" TEXT, "Mens Doubles" TEXT, "Womens Doubles" TEXT)

Name the number of womens singles for 1999 rio de janeiro
SELECT COUNT("Womens Singles") FROM table_30326 WHERE "Year Location" = '1999 Rio de Janeiro'
SELECT COUNT("Womens Singles") FROM "table_30326" WHERE "Year Location" = '1999 Rio de Janeiro'