Somalia has the lowest AIDI score in Africa at 7.10, reflecting extremely poor infrastructure across all sectors.
South Sudan (7.38) and Niger (8.12) rank slightly higher, showing similarly weak infrastructure profiles.
Ethiopia (13.09) and the Central African Republic (13.23), though more advanced than others on the list, still score under 15.
Nigeria's AIDI score of 25.70, while not high by global standards, is more than three times higher than Somalia’s, indicating major disparities in infrastructure across the continent.
Goodluck Jonathan's era (2010–2015) delivered the highest AIDI growth, with a CAGR of 6.84%, more than double that of his successor.
Muhammadu Buhari’s administration saw steady but slower growth, with a CAGR of 2.63%, increasing the score from 20.60 in 2016 to 25.70 in 2024.
Musa Yar’Adua’s brief tenure (2007–2010) still managed a solid CAGR of 4.26%, indicating promising momentum that was cut short.
Nigeria's AIDI score rose from 8.61 in 2003 to 25.70 in 2024, nearly tripling in two decades.
Obasanjo’s tenure saw the slowest growth, with only a 2.59% CAGR, suggesting limited infrastructure expansion in the early 2000s.
The fastest absolute annual increase occurred between 2010 and 2014, when scores jumped by over 2 points per year.
Despite steady growth, Nigeria's 2024 score of 25.70 still places it far from top performers in Africa, showing that significant infrastructure gaps remain.
Gaining independence in 1847, Liberia has been free for 177 years, long before most African nations began their fight for sovereignty.
With only 13 years of independence, South Sudan remains the newest nation on the continent, still navigating the challenges of nation-building.
The difference between Liberia and South Sudan is 164 years, showing the vast timeline over which African nations gained independence.
The majority of African nations secured sovereignty between the 1950s and 1970s, marking the height of the decolonisation movement.
Countries like Zimbabwe (1980), Namibia (1990), and Eritrea (1993) faced prolonged struggles against colonial rule.
Despite Liberia’s long years of independence, it has faced civil wars and economic instability, showing that the length of sovereignty doesn’t always translate to political or economic strength.
While sovereignty marks a historic milestone, many African nations, especially younger ones like South Sudan, continue to grapple with political, economic, and developmental challenges even decades after gaining independence.