The graph below shows the percentage of female students on four different courses at one university from 1970 to 2015

Given is a line graph depicting the proportional representations of college girls enrolled in four courses during the

period

from 1970 to 2015. It is evident that there was an upward trend in the major subjects,

while

a downward trend in computer science in the latter half of the

period

. As can be seen in the graph, the law subject increased slightly from 1970 to 1975.

Then

,

this

subject skyrocketed from around 10% to just under 100% in the following 25 years before fluctuating in the remaining 15-year

period

.

On the other hand

, the physics course and medicine course rose exponentially from approximately a quarter to nearly 90% during the

period

in question. There was an opposite trend in computer science. During the first ten years,

this

subject grew gently from about 30% to roughly 35%.

Then

, there was a surge from 1980 to 1990 before peaking at well under 75%. After that, the following

period

from 1990 to 2015 saw a notable decline in computer science before the proportion reached a bottom of 30% in 2015 as much as in 1970.