A country's decline is gradual: by the time you notice, it's too late

A country's impoverishment doesn't arrive with a bang: it accumulates year after year in GDP per capita until the gap with its peers becomes irreversible. Spain has spent two decades failing to converge with Europe, and Estonia has now overtaken it.

A country's decline doesn't announce itself with a roar. It seeps into daily life in the form of aging buses, under-resourced schools, ever-lengthening waiting lists or commuter trains that run late. By the time you want to put a name to it, it's been there for years. The honest way to measure it is GDP per capita: the income each inhabitant generates, a figure that no speech can dress up.

## Spain, two decades without converging

Spanish GDP per capita has been stagnant relative to neighboring countries for about **20 years**. It's not an impression: it's the trend shown by income-per-capita series since the start of the century. The country did grow, yes, but less than its neighbors, and that difference compounds.

The comparison with the rest of the EU is what provides context. Spain is not the only one stuck: several southern European partners show a similar stagnation. Among them, **Portugal** displays the clearest political will to climb out of the rut. Time will tell whether it succeeds.

The key figure is not one bad year. It's the slope. And Spain's slope, viewed over twenty years, is almost flat compared with countries that started from far less.

## The compound interest that separates countries

Here's where a simple idea that almost nobody examines carefully comes in: compound interest. Growing **0.5%** a year versus **4%** a year seems like a minor difference over a single year. Over **20 years**, the gap is brutal: the country growing at 4% ends up tripling the income of the one growing at 0.5%.

That explains why economies that were level with Spain relatively recently are now ahead. With **2022** data, **Estonia** already surpasses Spain in GDP per capita. Estonia was a Soviet republic in the 1980s. In three decades it has turned the comparison on its head.

The same reasoning applies to **Poland**, which today offers low prices and, if it keeps up its momentum, will become the country that manufactures cheaply for others while developing a higher value-added economy. And to **China**, whose trajectory depends on factors such as the savings rate and cultural values tied to hard work.

## The stock market confirms the trend

Money speaks more plainly than speeches, because nobody loses money gladly. The **IBEX 35**, the index of Spain's **35** largest listed companies, traces an evolution very similar to GDP per capita: the same drift toward nothing over the long run.

It's no coincidence. If the real economy doesn't grow, the companies that make it up find no engines to grow either. The stock market doesn't predict the future, but it confirms the past.

## What deteriorates without you noticing

The decline shows up in specific services: endless waiting lists, potholed roads, delayed commuter trains, postponed trials, overcrowded universities. Each on its own seems like a minor problem. Added up over years, they are the portrait of gradual impoverishment.

The underlying problem is that reversing it requires understanding it first. Without a diagnosis there is no reform, and without reform the slope stays the same. The recent history of **Argentina**, which a century ago was among the world's richest countries and today is not, shows that no country's prosperity is guaranteed.