<Tr> <Td> Grenada </Td> <Td> 32.7% </Td> </Tr> <Tr> <Td> Brunei </Td> <Td> 28.4% </Td> </Tr> <Tr> <Td> Colombia </Td> <Td> 26.4% </Td> </Tr> <Tr> <Td> Panama </Td> <Td> 25.7% </Td> </Tr>

Who are the top two export partners of the united states