<Tr> <Th> Rhode Island </Th> <Td>? </Td> <Td> 21 </Td> <Td> 1970: Lowered to 18 </Td> <Td> 1980: Raised to 19 1981: Raised to 20 1984: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> South Carolina </Th> <Td> 21 </Td> <Td> 1935: 18: for beer and wine 21: for liquor </Td> <Td> 18: for beer and wine 21: for liquor </Td> <Td> 1984: 19: for beer and wine 21: for liquor 1986: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> South Dakota </Th> <Td>? </Td> <Td> 1934: 21 (all) 1939: Lowered to 18: for 3.2% beer Raised to 19: for 3.2% beer </Td> <Td> 1972: 18: for beer and wine 21: for liquor </Td> <Td> 1984: 19: for beer and wine 21: for liquor 1988: Raised to 21 </Td> <Td> 21 </Td> </Tr> <Tr> <Th> Tennessee </Th> <Td> Pre 1881: None 1881: 21 </Td> <Td> 21 1964: Lowered to 18 </Td> <Td> 1979: Raised to 19 </Td> <Td> 1984: Raised to 21 </Td> <Td> 21 </Td> </Tr>

When did the drinking age become 21 in texas