Countries with the most Christians

Operation World seems to have dropped its charts but elsewhere (Wikipedia) I have found this list of nations wit the most professing Christians (not evangelicals but Christians of all sorts). This is not the list I saw on OW which haf Nicaragua near the top if I remember correctly.

Countries with the greatest proportion of Christians from Christianity by country (as of 2008):

1. Vatican City 100% (100% Roman Catholic)
2. Federated States of Micronesia ~100%
3. Samoa ~100%
4. Panama ~ 100%
5. Romania 99%
6. East Timor 99% (90% Roman Catholic)
7. Bolivia 98.1% (95% Roman Catholic)
8. Venezuela 98% (mostly Roman Catholic)
9. Marshall Islands 97.2%
10. Peru 97.1%
11. Paraguay 96.9% (mostly Roman Catholic)
12. Papua New Guinea 96.4%
13. Kiribati 96%
14. Angola +95%
15. Barbados +95%
16. Cyprus 95% (mostly Greek Orthodox)
17. Mexico 95% (mostly Roman Catholic)
18. Malta 95%
19. Colombia 93.5% (mostly Roman Catholic)
20. Guatemala +90% (50-60% Roman Catholic and ~40% Protestant, 0-10% non-Christian)