ielts writing task1 (question) picture below (answer)The graph illustrates the background and expectation of energy consumption created by 6 different fuels in the USA between 1980 and 2030. Numbers are measured in units. Overall, petrol and oil are the most important fuels during the period, while the least significant fuel was solar or wind in the first 15 years and hydropower in the future. Almost all fuels have increased significantly except natural gas and hydropower in the end. Petrol and oil, the main energy producer, started at 35 units in 1980, which figure fluctuated in the next 10 years but jumped dramatically from less than 35 units to above 40 units in 2020, expected to be over 45 units in 2030. Coal and natural gas began at above 15 units and approximately 20 units respectively, then the proportion of coal increased stably in the next almost 40 years, and expected to be almost 30 units in 2030. The figure of natural gas firstly dropped to only above 15 units in 1985, then got the bottom at slightly above 15 units and got the peak at almost 25 units in 2015, which expected to be stable in the next 15 years. The least three fuels, nuclear, solar and wind, hydropower, began at below 5 units and increased slightly in the first five years. However, the percentage of nuclear became constant and increased stably in the next 35 years, which is considered to be climbed nearly 10 units in 1930. The figures for the other two fuels showed fluctuation between 1990 and 2005. A constant increase can be seen in the figure of solar and wind in the next 15 years, and hopefully will climb a little above 5 units in 2030. But that of hydropower keeps the same figure between 2010 and 2030. Please give me any suggestion if you are free (grammar preferred), thanks a lot!!! :)