The line graph shows changes in energy costs in pounds for each month of the year.
Overall, the price went down during the first half of the year, reached the lowest point in late summer, and then increased again towards the end.
At the beginning, in January, the cost was about 6,000£ and stay almost same in February. From March it started to fall steadily, reaching around 4,000£ by May. After a small drop in June, the figure decline more sharply to just under 2,000£ in August, which was the bottom of the whole period.
After that, the trend turned upwards. From September the energy cost rose quickly, climbing to nearly 6,000£ again in November. In December the level remain stable, finishing the year at about the same price as it started.
In short, energy spending was highest in winter months, while the cheapest time was in late summer. This pattern probably relate to people using less heating when the weather is warmer.
