The line graph demonstrates global demand for four types of fibres such as cotton, polyester,cellulosic fibres and wool from 1980 to 2015, measured in million tonnes.
In general, the demand of cotton,polyester and cellulosic saw improvments of varying degrees, while wool remained unchanged. Notably, polyester experienced the most significant growth in the end of the period, overtaking the cotton which was the second required fibre in the second half of the period.
Poyester and cotton witnessed more noticable changes throughout the period. Cotton started the highest propotion with 15 million tonnes in 1980. It dramatically increased to 20 in 2000, before reaching a peak of 27 million tonnes in 2005. However, it slightly decreased to just about 24 million tonnes in 2010, then it recovered to approximatelly to 27 million of tonnes by the end of the time span. Demand of polyester is aslo went up but it was more rapidly than cotton. At the begining polyester started with two times lower than cotton with 5 million tonnes in 1980. Then it sharply rose without stopping to 50 million of tonnes, making this fibre first ranked in the chart.
The remaining fibres cellulose-based fabric and wool. Cellullosic stayed balansed at around 4 million tonnes untill 2000 and gradually rose to 7 million of tones by 2015. Nevertheless, wool was consistently the least popular fibre and the most time of the period remained unchanged with 2 million tonnes, but after a small uptick in 2005 wool reverted to the innitial figure at the end.
