What is surprising, given the recent controversy over Obama’s membership in the Trinity United Church of Christ, is how little the Obamas apparently gave to charity — well short of the biblical 10% tithe for all seven years. In two of the years, the Obamas gave far less than 1% of their income to charity; in three of the years, they gave around 1% of their income to charity. Only in the last two years have they given substantially more as their income skyrocketed — 4.7% in 2005 and 6.1% in 2006. (Of course, it is possible that the Obamas may have made gifts to other worthy causes that were not deductible for federal income tax purposes.)