盖洛普调查的结果 — — 也是2014年世界奉献指数（World Giving Index 2014）的基础 — — 表明大约23亿人，即世界人口的三分之一，每个月至少会有一次利他行为。
Gallup’s results, which form the basis of the World Giving Index 2014, indicate that approximately 2.3 billion people, a third of the world’s population, perform at least one altruistic act per month.