The chart provides the amount of customers who complained during 2014 and 2015 in two countries. The figures are measured in the percentage in twelve months.
Overall, the data in both years 2015 and 2014 witnessed an upward trend. Additionally, the number of customers in 2015 was the highest point.
Beginning with the figure in 2015, it started at 27% and decreased to 15% in April. However, this downward trend increased sharply to 23% in May. In the following five months, the figure declined to 15%. After three months, the number of customers filing a complaint reached approximately 30%.
Moving on to the figure in 2014, it stood at 29% in January prior to a fall in the next month. From February to April, the proportion of customer complaints increased significantly to 15%. After that, it fluctuated over next seven months and rose dramatically to approximately 22% in the final month.