Wow, that is a huge drop (40%)! I am really interested in why that drop may have occurred. I am a Psychology student, and may consider researching that question!

Actually, today in my social psychology class, we were discussing how our society is moving rapidly towards individualism and away from collectivism (i.e., more concern over self progression than societal and communal progression). This is a sad fact, and I hope we don't evolve ourselves completely void of empathy!!!