The first line graph provides a comparison of the amount of steel produced and the actual demand of steel, measured in million tonnes. The second line graph provides an illustration of the number of workers which is represented as thousands.
Regarding the first line graph, it is immediately apparent that the amount of steel produced greatly exceeds the average demand for steel. From January to August, there has been a parallelism between the proportion of steel produced and the volume needed, with an average gap of 2,000 million tonnes. The two highest peaks of steel production are at 5,000 million tonnes in February and September, while its lowest level is at approximately 900 million tonnes in December. As per the demand, two highest points of demand are in March and June, being 3,000 million tonnes each, whereas, in the second half of November, there is no demand at all.
With reference to the second line graph, it is readily apparent that the number of workers employed has rapidly and consistently decreased within the 12-month period. The employment commences with 5,000 workers in January, climbing up to the apex of almost 5,500 workers in February. After that the number of workers has drastically dropped to 1,000 workers in December.
Overall, it is of note that a strong correlation between the number of workers employed and the proportion of steel produced.