<Tr> <Td> Rwanda </Td> <Td> 62.00 </Td> <Td> (60.10--63.90) </Td> <Td> 67.10 </Td> <Td> (65.50--69.00) </Td> </Tr> <Tr> <Td> Saint Lucia </Td> <Td> 70.90 </Td> <Td> (68.60--73.40) </Td> <Td> 76.50 </Td> <Td> (74.50--78.80) </Td> </Tr> <Tr> <Td> Saint Vincent and the Grenadines </Td> <Td> 69.70 </Td> <Td> (68.50--71.00) </Td> <Td> 74.50 </Td> <Td> (73.10--75.80) </Td> </Tr> <Tr> <Td> Samoa </Td> <Td> 68.40 </Td> <Td> (65.40--70.90) </Td> <Td> 73.40 </Td> <Td> (70.90--75.80) </Td> </Tr>

Where is the us ranked in life expectancy