IBRD only vs Tonga: Literacy rate, population 25-64 years, adjusted gender parity index

IBRD only
0.9349 GPIA
in 2019
Tonga
1 GPIA
in 2018
IBRD only rank
16th
Tonga rank
18th

Literacy rate, population 25-64 years, adjusted gender parity index over time

  • IBRD only
  • Tonga
00.250.50.751197519972019

How they compare

Tonga currently reports 1 GPIA against 0.9349 GPIA in IBRD only, a difference of 0.0651 GPIA.

That makes Tonga's figure about 1.1 times IBRD only's.

Across all 5 years both countries report, Tonga has been ahead every year.

IBRD only ranks 16th and Tonga ranks 18th of 36 groups.

Tonga has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade IBRD only Tonga Difference Ahead
1970s 0.6826 GPIA 0.9994 GPIA 0.3168 GPIA Tonga
1990s 0.8196 GPIA 1 GPIA 0.1835 GPIA Tonga
2000s 0.887 GPIA 1 GPIA 0.1154 GPIA Tonga
2010s 0.9237 GPIA 1 GPIA 0.0773 GPIA Tonga

Averages of every year both report within each decade.

Frequently asked questions

Which has higher literacy rate, population 25-64 years, adjusted gender parity index, IBRD only or Tonga?
Tonga, at 1 GPIA against 0.9349 GPIA in IBRD only as of 2018.
What is the difference in literacy rate, population 25-64 years, adjusted gender parity index between IBRD only and Tonga?
0.0651 GPIA, with Tonga ahead.
How many years of comparable data are there for IBRD only and Tonga?
5 years are reported by both, from 1976 to 2018.
How do IBRD only and Tonga rank globally for literacy rate, population 25-64 years, adjusted gender parity index?
IBRD only ranks 16th and Tonga ranks 18th of 36 groups.
Where does this data come from?
UNESCO Institute for Statistics, published as Literacy rate, population 25-64 years, adjusted gender parity index (GPIA). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Individual pages

Share, cite or embed this page

Cite this page

IBRD only vs Tonga: Literacy rate, population 25-64 years, adjusted gender parity index. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 18 August 2026, from https://reference.statizoid.com/compare/literacy-rate-population-25-64-years-adjusted-gender-parity-index-gpia/ibrd-only/tonga/

Embed or link this data

Paste this into a page to link back to these figures. The data itself is free to reuse under CC BY 4.0 (World Bank Open Data); please keep the attribution.

<a href="https://reference.statizoid.com/compare/literacy-rate-population-25-64-years-adjusted-gender-parity-index-gpia/ibrd-only/tonga/">IBRD only vs Tonga: Literacy rate, population 25-64 years, adjusted gender parity index</a> — Statizoid

About this data

Indicator
Literacy rate, population 25-64 years, adjusted gender parity index (GPIA)
Unit
GPIA
Source
UNESCO Institute for Statistics
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
120 places, 2,155 data points, 1970–2019
Last refreshed

The Adjusted Gender Parity Index (GPIA) is calculated by dividing the female value for the indicator by the male value for the indicator. If the resulting value exceeds 1, the ratio is inverted and subtracted from 2. The adjusted gender parity index is symmetrical around 1 and lies in the range 0-2. An adjusted GPI equal to 1 indicates parity between females and males. In general, a value less than 1 indicates disparity in favor of males and a value greater than 1 indicates disparity in favor of females. For more information, consult the UNESCO Institute for Statistics: http://uis.unesco.org/