<Li> Continuing decline, inferred, observed or projected, in any of the following: <Ol> <Li> extent of occurrence </Li> <Li> area of occupancy </Li> <Li> area, extent or quality of habitat </Li> <Li> number of locations or subpopulations </Li> <Li> number of mature individuals </Li> </Ol> </Li> <Ol> <Li> extent of occurrence </Li> <Li> area of occupancy </Li> <Li> area, extent or quality of habitat </Li> <Li> number of locations or subpopulations </Li> <Li> number of mature individuals </Li> </Ol> <Li> extent of occurrence </Li> <Li> area of occupancy </Li>

When were tigers first listed as an endagered species