The line graph shows information about how many tons of four different types of textiles (polyester, cotton, cellulosic, wool) were demanded in the 35-year period between 1980 and 2015.
Overall, it can be seen that there were considerable upward trend in the need of polyester, cotton and cellulosic materials, while the demand for wool saw a gradual fall over the period in question. In 1980 the most demanded textile was cotton, but over the period the demand for polyester increased rapidly, making it the most wanted material out of four.
Looking at the details, regarding the polyester, the demand for it started at approximately 6 million tons, then started to rise slowly. In the beginning of 1995 the demand for polyester and cotton were equal, after that polyester continued growing in popularity reaching almost 70 million tons in demand in 2015, meaning it was the most needed type of fiber at that time.
As for the cotton, in 1980 it was the most demanded material with almost 15 million in demand. However after the intersection in demand with polyester, it became second most wanted and needed material, finishing at a bit over 30 million tons. By contrast, the wool and cellulosic materials were not as popular as cotton and polyester. The demand for cellulosic fiber grew from almost five million to ten million tons, while for wool, after a little fluctuation in 2000, it fell to nearly one million, which meant it was the least demanded type of textile among others.