A donation is a gift for charity, humanitarian aid, or to benefit a cause. A donation may take various forms, including money, alms, services, or goods such as clothing, toys, food, or vehicles. A donation may satisfy medical needs such as blood or organs for transplant.In the United States, in 2007, the Bureau of Labor Statistics found that American households in the lowest fifth in terms of wealth, gave on average a higher percentage of their incomes to charitable organizations than those households in the highest fifth. Charity Navigator writes that, according to Giving USA, Americans gave $298 billion in 2011 (about 2% of GDP). The majority of donations were from individuals (73%), then from bequests (about 12%), foundations (2%) and less than 1% from corporations. The largest sector to receive donations was religious organizations (32%), then education (13%). Giving has increased in 3 out of 4 years since 1971 (with the occasional declines occurring around recession years).Donations are given without return consideration. This lack of return consideration means that, in common law, an agreement to make a donation is an 'imperfect contract void for want of consideration.' Only when the donation is actually made does it acquire legal status as a transfer or property.It is possible to donate in the name of a third party, making a gift in honor or in memory of someone or something. Gifts in honor or memory of a third party are made for various reasons, such as holiday gifts, wedding gifts, in memory of somebody who has died, in memory of pets or in the name of groups or associations no longer existing. Memorial gifts are sometimes requested by their survivors (e.g. 'in lieu of flowers, contributions may be made to ABC Charity'), usually directing donations to a charitable organization for which the deceased was a donor or volunteer, or for a cause befitting the deceased's priorities in life or manner of death. Memorial donations are also sometimes given by people if they are unable to attend the ceremony.