The pie charts show sources which were used to generate electricity in Uzbekistan in 1980 and 1990

A glance at the pie charts sustained reveals the information about what sources were utilized for producing electricity in percentage in the period of 1980 and 1990 in Uzbekistan.
Overall, as soon as these pie charts provided are closely monitored, they have displayed the increased and decreased amounts and the highest result belonged to oil in comparison with hydroelectric power had the lowest proportion. Other indexes differed from each other year by year.
In details, nuclear power stood at 5% in 1980. It experienced 2 fold growth in the next decade. 22% was illustrated in coal in 1980. Unlike oil whose result had a sharp drop from 42% to 33%, coal achieved 5% soar. Hydroelectric power saw a stability with 5% in both years demonstrated. When it comes to natural gas, it did not lose its importance much. It means, 1% fall was shown in this source between 1980 and 1990.