Well this is a very interesting graph from Pew Global Research that shows an inverse reltionship between a nation's per capita GDP and its level of religiousity. Religiosity is measured using a three-item index ranging from 0-3, with "3" representing the most religious position. Respondents were given a "1" if they believe faith in God is necessary for morality; a "1" if they say religion is very important in their lives; and a "1" if they pray at least once a day.
Note that the United States is an outlier--our level of relgiousity is far higher than would be predicted by our per capita GDP. And several wealthy Muslim countries (most notably Kuwait) are also outliers.
Pew offers this analyis:
Global publics are sharply divided over the relationship between religion and morality. In much of Africa, Asia, and the Middle East, there is a strong consensus that belief in God is necessary for morality and good values. Throughout much of Europe, however, majorities think morality is achievable without faith. Meanwhile, opinions are more mixed in the Americas, including in the United States, where 57% say that one must believe in God to have good values and be moral, while 41% disagree.
The survey finds a strong relationship between a country's religiosity and its economic status. In poorer nations, religion remains central to the lives of individuals, while secular perspectives are more common in richer nations. This relationship generally is consistent across regions and countries, although there are some exceptions, including most notably the United States, which is a much more religious country than its level of prosperity would indicate. Other nations deviate from the pattern as well, including the oil-rich, predominantly Muslim -- and very religious -- kingdom of Kuwait.
The survey also measured global opinion about contemporary social issues, finding a mix of traditional and progressive views. Throughout Western Europe and much of the Americas, there is widespread tolerance towards homosexuality. However, the United States, Japan, South Korea, and Israel stand apart from other wealthy nations on this issue; in each of these countries, fewer than half of those surveyed say homosexuality should be accepted by society. Meanwhile, in most of Africa, Asia and the Middle East, there is less tolerance toward homosexuality.
Regarding gender issues, there is a broad consensus that both boys and girls should receive an education. In all 47 countries surveyed, at least seven-in-ten respondents believe that education is equally important for boys and girls. Most publics also believe that men and women are equally qualified for political leadership, although there is less agreement on this issue. Notably, in several predominantly Muslim publics -- including Mali, the Palestinian territories, Kuwait, Pakistan and Bangladesh -- majorities say that men make better political leaders. The survey also asked about another often contentious gender issue: Muslim women wearing the veil. In 15 of 16 Muslim publics surveyed, majorities say women should have the right to decide whether they wear a veil. Women generally are more likely than men to express this opinion.
Read it all here.