A glance at the pie charts compares the qualifications of employees in an advertising company between 1990 and 2010.
Overall, there were dramatic rises in the percentage of PhD-Science, whereas First Degree-Art significantly decreased. What is more, the proportion of Master-Science stayed unchanged during this period.
In 1990, the percentage of Master-Science used to be the largest overall, and then it remained unchanged to 29%. The proportion of First Degree-Art showed a different changed, sharply dropping from 15% to 2%. Similarly, there was a slight decline for First Degree-Science from 20% to 11%.
On the other hand, there was a significant growth in the percentage of PhD-Science, from 13% to 30%. The percentage of Master-Art with 21% in 1990 steadily increased to 23% in 2010. However, the increase was a little less dramatic for the proportion of PhD-Science from 2% to 5%.
