The pie charts compare data about the percentages of volunteers in various sectors between 2008 and 2014.
Overall, it can be observed that educational sector had the highest involvement, while healthcare experienced the lowest popularity amoung volunteers at the beginning; however, the leading position taken by environmental sector over the time, while education lost its leading position.
According to the 2008 chart, educational sector had the leading position with 24%, followed by environmental with mere 21%. Sport segment, in its turn, had 18% of volunteers. Both art and other sectors shared 15%, meanwhile healthcare depict 7%, maintaining the lowest numbers among all sectors.
The given chart for 2014 demonstrates that environmental sector took the leading poition with 34%, while previous leader, an educational sector, lost its popularity and hold only 8%. In contrast, the healthcare segment made a significant jump through the period, reaching 25%. Additionally, art and sport sectors experienced a decrease on numbers of volunteers sharing 12% each. The remaining other sector also showed slight incline to 9%.