SELECT MAX(year) FROM table_14903999_1 WHERE mixed_doubles = "Árni Þór Hallgrímsson Drífa Harðardóttir"
Apa tahun lalu árni Þór Hallgrímsson Drífa Harðardóttir memenangkan ganda campuran
CREATE TABLE table_14903999_1 (year INTEGER, mixed_doubles VARCHAR)