From Pew:
In fact, Americans pray more often, are more likely to attend weekly religious services and ascribe higher importance to faith in their lives than adults in other wealthy, Western democracies, such as Canada, Australia and most European states, according to a recent Pew Research Center study.
For instance, more than half of American adults (55%) say they pray daily, compared with 25% in Canada, 18% in Australia and 6% in Great Britain. (The average European country stands at 22%.) Actually, when it comes to their prayer habits, Americans are more like people in many poorer, developing nations – including South Africa (52%), Bangladesh (57%) and Bolivia (56%) – than people in richer countries.
As it turns out, the U.S. is the only country out of 102 examined in the study that has higher-than-average levels of both prayer and wealth. In every other country surveyed with a gross domestic product of more than $30,000 per person, fewer than 40% of adults say they pray every day.