How many years of comparable data are there for Portugal and Viet Nam?

28 years are reported by both, from 1996 to 2023.

Where does this data come from?

Statizoid (derived), published as Air transport, freight (million ton-km), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Portugal vs Viet Nam: Air transport, freight (million ton-km), per unit of GDP

Portugal

0 million ton-km per US$ of GDP

in 2023

Viet Nam

0 million ton-km per US$ of GDP

in 2023

Portugal rank

39th

Viet Nam rank

36th

Air transport, freight (million ton-km), per unit of GDP over time

Portugal
Viet Nam

How they compare

Viet Nam currently reports 0 million ton-km per US$ of GDP against 0 million ton-km per US$ of GDP in Portugal, a difference of 0 million ton-km per US$ of GDP.

That makes Viet Nam's figure about 1.1 times Portugal's.

The two have swapped places 6 times across 28 shared years of data; in 1996 it was Viet Nam ahead.

Portugal ranks 39th and Viet Nam ranks 36th of 179 countries.

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

Head to head by decade

Decade	Portugal	Viet Nam	Difference	Ahead
1990s	0 million ton-km per US$ of GDP	0 million ton-km per US$ of GDP	0 million ton-km per US$ of GDP	Viet Nam
2000s	0 million ton-km per US$ of GDP	0 million ton-km per US$ of GDP	0 million ton-km per US$ of GDP	Viet Nam
2010s	0 million ton-km per US$ of GDP	0 million ton-km per US$ of GDP	0 million ton-km per US$ of GDP	Viet Nam
2020s	0 million ton-km per US$ of GDP	0 million ton-km per US$ of GDP	0 million ton-km per US$ of GDP	Viet Nam

Averages of every year both report within each decade.

Frequently asked questions

Which has higher air transport, freight (million ton-km), per unit of gdp, Portugal or Viet Nam?: Viet Nam, at 0 million ton-km per US$ of GDP against 0 million ton-km per US$ of GDP in Portugal as of 2023.
What is the difference in air transport, freight (million ton-km), per unit of gdp between Portugal and Viet Nam?: 0 million ton-km per US$ of GDP, with Viet Nam ahead.
How many years of comparable data are there for Portugal and Viet Nam?: 28 years are reported by both, from 1996 to 2023.
How do Portugal and Viet Nam rank globally for air transport, freight (million ton-km), per unit of gdp?: Portugal ranks 39th and Viet Nam ranks 36th of 179 countries.
Where does this data come from?: Statizoid (derived), published as Air transport, freight (million ton-km), per unit of GDP. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Portugal vs Viet Nam: Air transport, freight (million ton-km), per unit of GDP. Statizoid, drawing on Statizoid (derived). Retrieved 12 September 2026, from https://infrastructure.statizoid.com/compare/air-transport-freight-million-ton-km-per-unit-of-gdp/portugal/viet-nam/

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<a href="https://infrastructure.statizoid.com/compare/air-transport-freight-million-ton-km-per-unit-of-gdp/portugal/viet-nam/">Portugal vs Viet Nam: Air transport, freight (million ton-km), per unit of GDP</a> — Statizoid

About this data

Indicator: Air transport, freight (million ton-km), per unit of GDP
Unit: million ton-km per US$ of GDP
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 226 places, 9,483 data points, 1970–2023
Last refreshed: 20 August 2026

Air transport, freight (million ton-km) divided by GDP (current US$), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.