The two pie charts illustrate how many employees in advertising company possessing qualifications in the different levels of science and art changed in 1990 and 2010.
Overall, the number of employee’s qualifications in advertising company were recorded an increase in PhD science and art, and master art, an opposite trend was obsered in first degree science and art, expect for master science, whose the staff’s qualification unchanged. In addition, the porpotion of first degree science saw a significant decrease in 1990 and 2010, but PhD science was recorded a reserved trend.
Regarding the growth trend, the PhD science stood at 13% in 1990 before dramatically increasing and the account of ones the highest qualificated possession was recorded in 2010. The propotion of PhD art and master art standed at 2% and 21% in 1990, respectively, before both fields increase up to 5% and 23% in 2010.
Of the six fields, the propotion of First degree science saw a significant decrease by 9%, which accounted for 20% and 11% in 1990 and 2010, respectively, while the percentage of PhD science saw a opposite pattern that increased by 17% in 1990 and 2010. About the percentage of First degree art decresed from 15% in 1990 to 2% in 2010.