The provided table illustrates the average monthly consumption of five mobile phone brands in a European country over a ten-year period, from 2010 to 2020.
Overall, the consumption of Brand C, Brand E, and Brand B generally increased during this decade, while Brand A saw some fluctuations before a slight fall, and Brand D experienced a steady decline.
Brand C showed the most significant growth, starting at 75 units per 1000 people in 2010 and rising consistently to 135 units by 2020. Similarly, Brand E's consumption more than doubled, from 40 units to 60 units over the same period. Brand B also saw a modest increase, beginning at 120 units and reaching 125 units by the end of the period, though it dipped slightly in 2012 and 2014.
In contrast, Brand D's consumption steadily decreased from 60 units in 2010 to 50 units in 2020. Brand A maintained the highest consumption throughout the period, although its figures fluctuated. It started at 140 units, peaked at 170 units in 2016, and then slightly fell back to 162 units by 2020.