sentences:  In Iraq, Christians numbered about 1,500,000 in 2003, representing just over 6% of the population of 26 million (from 1.4 million or 8.5% of 16.5 million in 1987; and down from 12% in 1948 in a population of 4.8 million).Since then, it has been estimated that the number of Christians in Iraq have dropped to 500,000+.However, due to a lack of an official census, the number is difficult to estimate.