12015-10-20T15:04:17-07:00Martin Fisher5744be79160d9c8db2b0979b407ba6885418404463053Three sets of percentages, plotted as both pie charts and bar charts. By Schutz [CC BY 1.0], via Wikimedia Commonsplain2015-10-25T07:12:15-07:00Martin Fisher5744be79160d9c8db2b0979b407ba68854184044