<Tr> <Td> (1969) 11 (1969) </Td> </Tr> <Tr> <Td> None September 23, 1972--February 25, 1986 </Td> </Tr> <Tr> <Td> </Td> <Td> KBL </Td> <Td> (1981) 12 (1981) </Td> </Tr> <P> President Ferdinand E. Marcos ruled by decree when he declared martial law on September 21, 1972 . He inaugurated the "New Society" after a new constitution was ratified on January 17, 1973 . He declared the Fourth Republic on January 17, 1981, after martial law was lifted . </P>

Who is the past president of the philippines