The given bar graph illustrates four various instruments played by children, measured by percntages in the years of 2005, 2010, 2013.
Overall, it is clear that, guitar and piano were predominantly used by children in all over period, and overtook the highest propotion at each section. However, other means of instruments, which are violin and drums comprised the lowest number.
According to the chart, the figure for piano made-up 11% in 2005, and the figure for guitar was in a position lower, to one point. By the year of 2010 their number increased to 20% and 18% respectively, consequently, the piano was more frequently used in comparison with guitar. By contrast, the figure guitar transcended the piano by the end of the period, hence it reached its peak and composed 40%.
By looking more preciesly, it is obvious that the figure for drums showed minor changes in the years of 2005 and 2010 and comprised 5%. Nonetheless, in 2005, it only rose-up to approximatelly 10%. Furtermore, the figure for violin experienced gradually decrease by the end of the period, which means it number plummet from 10% to 5%.