<Tr> <Th> Year </Th> <Th> 1990 </Th> <Th> 1995 </Th> <Th> </Th> <Th> 1998 </Th> <Th> 1999 </Th> <Th> 2000 </Th> <Th> </Th> <Th> 2011 </Th> <Th> 2017 </Th> </Tr> <Tr> <Td> Average income </Td> <Td> 3,076 </Td> <Td> 4,107 </Td> <Td> 4,745 </Td> <Td> 4,822 </Td> <Td> 4,691 </Td> <Td> 4,943 </Td> <Td> 8,726 </Td> <Td> 9,618 </Td> <Td> 11,589 </Td> </Tr> <Tr> <Td> Median income </Td> <Td> 2,296 </Td> <Td> 3,135 </Td> <Td> 3,617 </Td> <Td> 3,692 </Td> <Td> 3,500 </Td> <Td> 3,607 </Td> <Td> 5,600 </Td> <Td> 6,307 </Td> <Td> 8,846 </Td> </Tr> <Table> Households income from work by ethnic group per head (SGD) <Tr> <Th> Ethnic group </Th> <Th_colspan="3"> Average household income </Th> <Th_colspan="3"> Median household income </Th> </Tr> <Tr> <Th> 1990 </Th> <Th> 2000 </Th> <Th> </Th> <Th> 1990 </Th> <Th> 2000 </Th> <Th> </Th> </Tr> <Tr> <Td> Total </Td> <Td> 3,076 </Td> <Td> 4,943 </Td> <Td> 7,214 </Td> <Td> 2,296 </Td> <Td> 3,607 </Td> <Td> 5,000 </Td> </Tr> <Tr> <Td> Chinese </Td> <Td> 3,213 </Td> <Td> 5,219 </Td> <Td> 7,326 </Td> <Td> 2,400 </Td> <Td> 3,848 </Td> <Td> 5,100 </Td> </Tr> <Tr> <Td> Malays </Td> <Td> 2,246 </Td> <Td> 3,148 </Td> <Td> 4,575 </Td> <Td> 1,880 </Td> <Td> 2,708 </Td> <Td> 3,844 </Td> </Tr> <Tr> <Td> Indians </Td> <Td> 2,859 </Td> <Td> 4,556 </Td> <Td> 7,664 </Td> <Td> 2,174 </Td> <Td> 3,387 </Td> <Td> 5,370 </Td> </Tr> <Tr> <Td> Others </Td> <Td> 3,885 </Td> <Td> 7,250 </Td> <Td> </Td> <Td> 2,782 </Td> <Td> 4,775 </Td> <Td> </Td> </Tr> </Table>

Why is there an increase in different nationalities in singapore