Observations

2023: 2.13436

Updated: Feb 4, 2026 11:47 AM CST

Units:

Index,

Not Seasonally Adjusted

Frequency:

Annual

Notes

Title	Release Dates

Index of Human Capital per Person for Nigeria	2016-06-09	2025-10-28

Source

University of Groningen	2016-06-09	2019-04-10
University of California, Davis	2016-06-09	2019-04-10
University of Groningen	2019-04-11	2021-01-13
University of California, Davis	2019-04-11	2021-01-13
University of Groningen	2021-01-14	2023-01-22
University of California, Davis	2021-01-14	2023-01-22
University of Groningen	2023-01-23	2025-10-27
University of California, Davis	2023-01-23	2025-10-27
University of Groningen	2025-10-28	2025-10-28
University of California, Davis	2025-10-28	2025-10-28

Release

Penn World Table 9.0	2016-06-09	2019-04-10
Penn World Table 9.1	2019-04-11	2021-01-13
Penn World Table 10.0	2021-01-14	2023-01-22
Penn World Table 10.01	2023-01-23	2025-10-27
Penn World Table 11.0	2025-10-28	2025-10-28

Units

Index	2016-06-09	2025-10-28

Frequency

Annual	2016-06-09	2025-10-28

Seasonal Adjustment

Not Seasonally Adjusted	2016-06-09	2025-10-28

Notes

Index of human capital per person, based on years of schooling (Barro/Lee, 2012) and returns to education (Psacharopoulos, 1994) Source ID: hc When using these data in your research, please make the following reference: Feenstra, Robert C., Robert Inklaar and Marcel P. Timmer (2015), "The Next Generation of the Penn World Table" American Economic Review, 105(10), 3150-3182, available for download at www.ggdc.net/pwt For more information, see http://www.rug.nl/research/ggdc/data/pwt/.	2016-06-09	2025-10-28

Index of Human Capital per Person for Nigeria (HCIYISNGA066NRUG)