<Tr> <Td_colspan="2"> Buddhism </Td> <Td> </Td> <Td_colspan="2"> 7% </Td> </Tr> <Tr> <Td_colspan="2"> Folk Religion </Td> <Td> </Td> <Td_colspan="2"> 5.9% </Td> </Tr> <Tr> <Td_colspan="2"> Other </Td> <Td> </Td> <Td_colspan="2"> 0.8% </Td> </Tr> <Tr> <Td_colspan="5"> Pew Research Center, 2015 </Td> </Tr>

Which is the highest caste in the world