Well the Nigerians may be actively engaged in scamming billions of dollars from the rest of us (In 1999, Howard Jeter, the U.S. State Department's deputy assistant secretary for African affairs, claimed that "Americans lose $2 billion annually to white collar crime syndicates based in Nigeria.") but at least we know that they are going to be forgiven for these fiscal indescretions. As far as church attendance goes, only Ireland comes close.

At 89% attendance the Nigerians truely are a church going nation, they have a church attendance more than double that of the USA (you heathen lot). As for Australia we only made it to 16%, which from The Green Mans anecdotal experience is fairly generous. This means that 84 percent of Australians don't attend church, which in a strange example of synergy, is also the average age of church attendees in Australia.

The full list of countries is listed below.

#1 Nigeria: 89%
#2 Ireland: 84%
#3 Philippines: 68%
#4 South Africa: 56%
#5 Poland: 55%
#6 Puerto Rico: 52%
#7 Portugal: 47%
#8 Slovakia: 47%
#9 Mexico: 46%
#10 Italy: 45%
#11 United States: 44%
#12 Belgium: 44%
#13 Peru: 43%
#14 Turkey: 43%
#15 India: 42%
#16 Canada: 38%
#17 Brazil: 36%
#18 Netherlands: 35%
#19 Venezuela: 31%
#20 Uruguay: 31%
#21 Austria: 30%
#22 United Kingdom: 27%
#23 Argentina: 25%
#24 Chile: 25%
#25 Spain: 25%
#26 Croatia: 22%
#27 Hungary: 21%
#28 France: 21%
#29 Romania: 20%
#30 Australia: 16%
#31 Switzerland: 16%
#32 Lithuania: 16%
#33 Czech Republic: 14%
#34 Korea, South: 14%
#35 Taiwan: 11%
#36 Ukraine: 10%
#37 Moldova: 10%
#38 Bulgaria: 10%
#39 Georgia: 10%
#40 China: 9%
#41 Armenia: 8%
#42 Serbia and Montenegro: 7%
#43 Belarus: 6%
#44 Azerbaijan: 6%
#45 Latvia: 5%
#46 Norway: 5%
#47 Denmark: 5%
#48 Finland: 4%
#49 Estonia: 4%
#50 Iceland: 4%
#51 Sweden: 4%
#52 Japan: 3%
#53 Russia: 2%
Weighted average: 26.2%

Source