The pie charts compare the distribution of volunteers by organization from 2008 to 2014.
Overall, it is evident that educational and environmental remained dominant components although their proportion increased and decreased over time. Meanwhile, sport experienced the noticeale change, whereas the remaining segments underwent relatively minor fluctuations.
In 2008, education accounted for 24%, making it by far the most significant segment. This was followed by environment, which comprised 21%, while art represented a modest share at 18%. Meanwhile, sports and others constituted for 15% respectively. Collectively, these four categories contributed 93% of the total. By contrast, health care accounted for only 7%, indicating that it make a negligible contribution to the distribution in that year.
Turning to 2014, education accounted for 29%, despite a slight increase compared to their earlier figure. Notably, sport experienced the most pronounced shift rising from 15% to 25%, while education declined gradually to 17%. Meanwhile, art and others dropped sharply to 12% and 9%, whereas health care rose slightly to 8%, suggesting that the pattern remained broadly similar despite some redistribution among the categories.