<Table> <Tr> <Td> 0.900 and over 0.850--0.899 0.800--0.849 0.750--0.799 0.700--0.749 </Td> <Td> 0.650--0.699 0.600--0.649 0.550--0.599 0.500--0.549 0.450--0.499 </Td> <Td> 0.400--0.449 0.350--0.399 and under Data unavailable </Td> </Tr> </Table> <Tr> <Td> 0.900 and over 0.850--0.899 0.800--0.849 0.750--0.799 0.700--0.749 </Td> <Td> 0.650--0.699 0.600--0.649 0.550--0.599 0.500--0.549 0.450--0.499 </Td> <Td> 0.400--0.449 0.350--0.399 and under Data unavailable </Td> </Tr> <Table> <Tr> <Td> Very high High </Td> <Td> Medium Low </Td> <Td> Data unavailable </Td> </Tr> </Table> <Tr> <Td> Very high High </Td> <Td> Medium Low </Td> <Td> Data unavailable </Td> </Tr>

Which of the following is not one of the four groups of economic units