The answer according to this study is No.
"American families who make over $300,000 a year donate to charity a mere 4 percent of their incomes. The statistic should not be surprising, as studies by University of Minnesota psychologist Kathleen Vohs and her collaborators have shown that merely glimpsing dollar bills makes people less generous and approachable, and more egocentric.
Now come a new set of studies that reveal yet another toll that money takes. An international team of researchers led by Jordi Quoidbach report in the August 2010 issue of Psychological Science that, although wealth may grant us opportunities to purchase many things, it simultaneously impairs our ability to enjoy those things."