The four pie charts illustrate the global market proportion of three operating and other systems in the period of 2012 and 2015.
Overall, Os 1 increased steadily over time and made up the most in 2015. However, Os 2 remained stable during this period of time, with all of its numbers being the same or similar. While Os 3 did not show a clear trend, it fluctuated and other systems experienced a significant decline in numbers.
In 2012, Os 1 made up 20% of the chart, while it increased gradually to 38% in 2013, 47% in 2014 and 52% in 2015. In contrast, Os 2 did not have any remarkable changes. It had the same number in 2012 and 2013, with 17% and also in 2014 and 2015 with 18%.
During the same time, Os 3 dropped from 15% in 2012 to 10% in 2013 and 12% in 2014, but it witnessed a marginal increase of 3%, adding its number to 15% in the final year.While other system declined substantially, from 48% in the first year to only 15% in the final year, the two other year it also decreased, with 35% in 2013 and 23% in 2014.