The bar chart illustrates data on the number of gorillas in seven different nations—Gabon, Uganda, Rwanda, Nigeria, Cameron, Angola, and the Central African Republic—in two separate years, 1990 and 2015.
Overall, Uganda and Central African Republic stood out due to their remarkable figures, albeit experiencing a decline. While Nigeria accounted for almost the same number of gorillas in both years, Gabon had half as many gorillas as Nigeria. Notably, Rwanda experienced a downward trend over time, hitting an all-time low in 2015.
Starting with outliers—Uganda and Central African Republic, the former constituted the highest number of gorillas, at around 8,000 in 1990, which was approximately 3,800 higher than that of the latter. After that, both Uganda and Central African Republic saw a noticeable decrease in 2015, with the figures standing at 7,500 and about 4,000, respectively.
Regarding the other countries, Gabon had the lowest gorilla population in 1990, at around 1,600, a figure that then rose to approximately 1,800 in 2015. While Cameroon and Angola constituted the same number of gorillas in 1990, at around 1850, they experienced a negligible increase to 1,900 over the course of 25 years. In stark contrast, the figure for Rwanda halved by 2015, reaching just 1,000. Ultimately, the number of gorillas in Nigeria was just below 2,500 in 1990, and it remained unchanged by 2015.