What is the average size of a contribution to Hillary Clinton's campaign? To Barack Obama's campaign?

I have found these seemingly simple pieces of information hard to find! As I talk about the candidates with my friends and compare them, I think this would be a useful statistic. Would a smaller avg. contribution indicate a broad base of support? Would a large one indicate more dedicated supporters? Wealthier supporters?What is the average size of a contribution to Hillary Clinton's campaign? To Barack Obama's campaign?
when were the campaign contributions limited to $2,300? I thought they were capped at $5,000 for individuals...????What is the average size of a contribution to Hillary Clinton's campaign? To Barack Obama's campaign?
Private donations are limited to $2300 max. But, many donors actually contribute less than that so they can contribute again and again. In January, Obama picked up 32 million because 224,000 new donors kicked in. You can be sure both he and Sen. Clinton would love to have Edwards endorsement, but especially his donor list. Most of Edwards big donors were the trial bar.