<Ul> <Li> 9 </Li> </Ul> <Li> 1978 <Ul> <Li> 8 </Li> <Li> 13 </Li> <Li> Briggs Initiative </Li> </Ul> </Li> <Ul> <Li> 8 </Li> <Li> 13 </Li> <Li> Briggs Initiative </Li> </Ul> <Tr> <Th> 1980--1989 </Th> </Tr>

What other effect or effects did proposition 13 have