Bulgaria is officially a secular nation and the Constitution guarantees the free exercise of religion but designates Orthodoxy as a "traditional" religion. In the 2001 census, 82.6% Bulgarians declared themselves Orthodox Christians, 12.2% Muslim, 1.2% other Christian denominations, 4% other religions  and zero percent atheists. Most citizens of Bulgaria have associations — at least nominally — with the Bulgarian Orthodox Church. Founded in 870 AD under the Patriarchate of Constantinople , the Bulgarian Orthodox Church had autocephalous status since 927 AD. The Church became subordinate within the Patriarchate of Constantinople, twice during the periods of Byzantine  and Ottoman  domination. It was re-established first in 1870 in the form of the Bulgarian Exarchate, and then in the 1950s as the Bulgarian Patriarchate.

Question: What percentage of Bulgarians are non-Orthodox Christians?
Answer: 1.2%

Question: What is this paragraph mainly about?
Answer: Bulgarian Orthodox Church

Question: In the 2001 census, were there more Orthodox Christians or Muslims in Bulgaria?
Answer: Orthodox Christians

Question: What does the constitution call Orthodoxy?
Answer: a "traditional" religion

Question: How many years was it from the time the Bulgarian Orthodox Church was founded until it became autocephalous?
Answer: 57

Question: How many Bulgarians in percent didn't declare themselves Orthodox Christians in the 2001 census?
Answer: 17.4

Question: How many more Bulgarians in percent declared themselves Orthodox Christians than Muslim?
Answer: 70.4

Question: What happened first: the Bulgarian Exarchate or the Bulgarian Patriarchate?
Answer: the Bulgarian Exarchate

Question: What happened second: the Bulgarian Exarchate or the Bulgarian Patriarchate?
Answer: the Bulgarian Patriarchate

Question: How many years after the Bulgarian Orthodox Church was founded did it get autocephalous status?
Answer: 57

Question: Which happened first, the establishment of the Bulgarian Orthodox Church or census of 2001?
Answer: Founded in 870

Question: What was the church known as first, the Bulgarian Orthodox Church or the Bulgarian Patriarchate?
Answer: Bulgarian Orthodox Church

Question: How many percents of the 2001 census declared not being Orthodox Christians?
Answer: 17.4

Question: What came first, the Bulgarian Exarchate or the Bulgarian Patriarchate?
Answer: 1870 in the form

Question: How many years after the church was re-established in the form of the Bulgarian Exarchate, did it re-establish again as the Bulgarian Patriarchate?
Answer: 80

Question: How many percentages did Muslims and other religions combine according to the 2001 census?
Answer: 16.2

Question: How many in percent in Bulgaria from the census weren't Orthodox Christian?
Answer: 17.4

Question: How many in percent in Bulgaria from the census weren't Muslim?
Answer: 87.8

Question: How many in percent in Bulgaria from the census weren't atheist?
Answer: 100

Question: Which religious group in Bulgaria from the census is larger: Orthodox Christians or Muslim?
Answer: Orthodox Christians

Question: Which religious group in Bulgaria from the census is smaller: Orthodox Christians or Muslim?
Answer: Muslim

Question: Which religious group in Bulgaria from the census is larger: Orthodox Christians or other Christian denominations?
Answer: Orthodox Christians

Question: Which religious group in Bulgaria from the census is smaller: Orthodox Christians or other Christian denominations?
Answer: other Christian denominations

Question: Which religious group in Bulgaria from the census is larger: Orthodox Christians or other religions?
Answer: Orthodox Christians

Question: Which religious group in Bulgaria from the census is smaller: Orthodox Christians or other religions?
Answer: other religions

Question: Which religious group in Bulgaria from the census is larger: Orthodox Christians or atheists?
Answer: Orthodox Christians

Question: Which religious group in Bulgaria from the census is smaller: Orthodox Christians or atheists?
Answer: atheists

Question: Which religious group in Bulgaria from the census is larger: Muslim or atheists?
Answer: Muslim