Overall and in general: who do you think is more generous, men or women?

When I say "generous" I am talking about sacrificing -specifically- MONEY, selflessly to others in their lives; I am talking about MONEY in their own possession NOT other people's money (i.e. don't include a congressman or senator, like Nancy Pelosi or Joe Lieberman, for example, who are very generous with other people's money but very protective of their own money, as their respective Net Worth reports filed with the FEC indicate; pardon my digression).