<Ul> <Li> Hamburgers </Li> <Li> chicken </Li> <Li> french fries </Li> <Li> soft drinks </Li> <Li> milkshakes </Li> <Li> salads </Li> <Li> desserts </Li> <Li> breakfast </Li> <Li> hot dogs </Li> </Ul> <Tr> <Th> Revenue </Th> <Td> US $4.05 billion (FY 2015) </Td> </Tr> <Tr> <Th> Operating income </Th> <Td> US $363.0 million (FY 2015 RBI) </Td> </Tr> <Tr> <Th> Net income </Th> <Td> US $1.912 billion (FY 2015 RBI) </Td> </Tr>

When did burger king start selling onion rings