The bar chart showed the percentage of school children learning to play four different musical instruments violin guitar piano drums in 2005 2010 2015

The bar chart illustrate the percentage of children learning to play violin, guitar, piano, drums in three timelines, 2005, 2010 and 2015
Overall, the rate of guitar learners has the biggest percentage while children study drum and violin have the lowest student.
More specifically, the rate of guitar leaners always increase and has the biggest student in both three years 11%, 20% and 27% respectively. Except the student learning piano, which was the second place, the remaining instruments much lower could not even reach half of the guitar learners. in 4 aforementioned, the record of the student who learning violin was the median of the whole researcherd data in 2005 and 2010, and the last year is 2015, the median percentage is drum learners. the percentage of children learning to play drum, staying in the bottom of the list in 2005 and 2010, and the last year is 2015, the lowest percentage is violin