The pie charts illustrate the distribution of three different computer operating systems from 2012 to 2015.
A general overview reveals that the figure for OS 1 was the dominant system, which made up the biggest shares between 2013 and 2015, while the reverse was true for 2012, when the ‘other’ systems had the biggest amount. By contrast, OS 3 had the smallest shares in every year.
Upon closer inspection, the figure for ‘other’ computer operating systems made up 48% – which was the biggest amount in 2012. It experienced a gradual decline throughout the period, rising from 35% to 23% before ending at 15% in 2015. By contrast, the percentage for OS 1 represented a stable jump by the end of the period, which started at 20%. It increased to 38% in 2013 and 47% in 2014, while ending the period at 52%, which was the highest amount in 2015.
Among low-tendency figures, the figure for OS 2 remained unchanged at 17% in 2012 and 2013, meanwhile, the percentage of OS 3 showed a downward trend from 15% to 10%. The disparity between the figures for OS 2 and OS 3 narrowed over the years, with 18% and 12%, respectively. In 2015, the proportion for OS 3, forming 15%, was slightly lower than the percentage of OS 2, which was 18%.