African elephants in Gorongosa National Park are threatened by poachers, who kill the elephants to sell their valuable tusks. However, some African
elephants never grow tusks (tuskless) and therefore are not hunted by the
poachers. The graph shows the total female elephant population and the
percent of tuskless females in that population from 1970 to 2015. Which of
the following describes the trend in the female elephant population from
1970 to 1995? *