The table illustrates the amount of oil produced each day in Nigeria, Chad, Congo, and Somalia between 2000 and 2004. Overall, all countries experienced an upward trend, with the exception of Congo, whose number showed a remarkable decrease. Additionally, Chad was the only nation that started oil production in 2003, as well as witnessed the most substantial increase throughout.
Looking first at Congo and Nigeria, the former began at 275,000 barrels in 2000, which was the highest among the selected countries, followed by that of the latter country at 205,000 barrels in the same year. The barrels of oil produced per day in Congo plummeted over the period and ended up at 203,000 in 2004, which shrank by approximately a third compared to the initial year. The figure for Nigeria commenced to decline slightly to 190,000 barrels in the next two years before rising notably to 213,000 barrels in 2004, making it the highest oil production country among the four examined nations.
Turning to Chad and Somalia, a dramatic increase was recorded in both countries and they also shared the same ending point. Chad had not generated oil until 2003, and it started at 8,000 barrels per day in 2003 and rose remarkably to 50,000 barrels in 2004, which was roughly six times higher than the initial number. The figure for Somalia started at 5,000 barrels and climbed up gradually to 17,000 barrels in 2002, doubling its number in 2003. The figure for this country continued to climb up and ended up at the same point as Chad, at 50,000, which was ten times higher than the original number.