The provided line graph shows data on employment for women during a 60-year period from 1950 to 2010 at three different educational levels: high school, graduate, and postgraduate.
As can be observed, there was a declining tendency over the periods in the percentage of working women with graduate and high school degrees. Furthermore, there was an increase in the proportion of postgraduates between 1950 and 1970. On the other hand, during the remaining periods, it gradually decreased.
First, the proportion of women in high school reached its peak in 1950 at almost 80%; then came the percentage of women who graduated, and then the data for post-graduate women, at roughly 70% and 55%, respectively. In the first 20 years, the percentage of women with graduate and high school degrees working declined slowly; on the other hand, the rate of women with post-graduate degrees fell sharply, then increased dramatically and peaked at about 80%.
Following 1970, the percentage of female employees with a high school diploma and those who had graduated varied before declining to approximately 68% and 60%, respectively, in 2010. Furthermore, the propotion of those with post-graduate degrees peaked in 2000 at almost 73% and dropped again to nearly 70% in 2010.