The bar chart illustrates the estimated population of gorillas in the wild across seven African countries in 1990 and 2015.
Overall, Uganda had the highest number of gorillas in both years, though the figure slightly decreased in 2015. In contrast, most other countries experienced either growth or small changes in population over the 25-year period.
In 1990, Uganda recorded the largest gorilla population, reaching around 8,500, which declined to approximately 7,500 in 2015. The Central African Republic followed, but its numbers also fell during the same period. On the other hand, Rwanda and Nigeria showed notable increases in gorilla numbers, while Gabon and Angola experienced only minor changes.
Cameroon maintained a relatively stable population between the two years. Nigeria had one of the lowest populations in 1990 but showed significant improvement by 2015.
In summary, while some countries managed to grow or maintain gorilla populations, others saw declines, especially Uganda and the Central African Republic.