<Tr> <Td> Taiwan </Td> <Td> 32,505 </Td> <Td> 42,229 </Td> <Td> 42,205 </Td> <Td> 49,136 </Td> </Tr> <Tr> <Td> China </Td> <Td> 21,856 </Td> <Td> 27,013 </Td> <Td> 23,698 </Td> <Td> 16,280 </Td> </Tr> <Tr> <Td> Northern Mariana Islands </Td> <Td> 19,316 </Td> <Td> 17,579 </Td> <Td> 14,334 </Td> <Td> 14,761 </Td> </Tr> <Tr> <Td> Philippines </Td> <Td> 19,129 </Td> <Td> 21,652 </Td> <Td> 12,427 </Td> <Td> 12,079 </Td> </Tr>

Which factors contributed to the growth of tourism in north america