Martyrs

Christianity Today's Imago Fidei: provides this image of "The History of Martyrdom" from World Christian Trends, and notes:

The number of Christians killed for their faith has been growing since the beginning of Christianity, in AD 33.

Click on the image or go to the original source for a much larger version.

Some selected statistics from the same source:

TOTAL PERSONS, AD 33-2000

All persons born since AD 33: 36,673 million
All persons evangelized since AD 33: 12,105 million (33% of human race)
All Christians since AD 33: 8,344 million (23% of human race)
All martyrs killed since AD 33: 69,420.000
Martyrs as % all Christians ever: 0.8%
Martyrs among all Christian leaders ever: 2.0%

CONFESSION OF VICTIMS. AD 33-2000 (total martyrs of each tradition)

Orthodox: 42,798,000:

Russian Orthodox: 21,626,400
East Syrians (Nestorians): 12,379,000
Ukrainian Orthodox: 3,500,000
Gregorians (Armenian Apostolic): 1,215,100

Roman Catholic: 12,210,000
Catholics (before AD 1000): 855,000
Independents: 3,512,000
Protestants: 3,172,000
Anglicans 1,046,000
Marginal Christians: 6,700
other and background martyrs: 6,675,7C0
Total all martyrs: 69,420,000

PERSECUTORS AND THEIR VICTIMS - AD 33-2000

Persecutors responsible/Martyrs:

State ruling power/55,871,000
Atheists (overlap with above)/31,689,000
Muslims/9,121,000
Ethnoreligionists (animists)/7,469,000
Roman Catholics/5,171,000
Quasi-religionists/2,712,000
Buddhists (Mahayana)/1,651,000
Hindus/676.000
Zoroastrians (Parsis)/384,060
Eastern Orthodox/222,060
Other non-Christians/115,000
Other Christians/146,000

SUBTOTALS:

Non-Christian persecutors/63,882,000
Christian persecutors/5,538,000
Total all martyrs: 69,420,000

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Christianity Today Imago Fidei: Infographic: The History of Martyrdom, GCTS - Global Christianity - Global Data