How It's Earned

A speech can promise a number. Only a business can earn one, and a country's GDP is nothing more than the sum of every business inside it. This page asks the plainer question behind the speech's $40,000 figure: which businesses, doing what kind of work, actually produce Sri Lanka's income twenty-three years from now. Here is the mix de Mel's model expects to carry GDP from today to $1.19 trillion by 2048, set against where the country earns its keep right now, and the arithmetic connecting the two.

Part One

The growth the sector mix has to carry

Before asking who earns the money, it helps to see how much there is to earn. This is the model's real GDP path, priced in constant 2020 dollars throughout — inflation is a silent tax on every long-dated projection, and the only honest way to promise a number twenty-three years out is to promise it in money that still buys what it buys today.

$1.19T Real GDP in 2048, up from $84.4B in 2025 — a fourteenfold expansion in twenty-three years, roughly 12% compounded annually.

Real GDP, 2020 US$ · de Mel model

A real starting line. Sri Lanka's economy actually grew 5.0% in 2024 — its first full year of expansion after the 2022–23 crisis — and grew 5.0% again over the first nine months of 2025, per the Central Bank's own national accounts. The model's opening assumption for 2025 is also 5.0%. A forecast is only as good as where it starts, and this one starts from a fact that was on the record before the forecast was written.

Part Two

The 2048 mix

Six sectors carry that $1.19 trillion. None of them are the sector carrying the country today.

2048 · Targetshare of real GDP

Part Three

The mix right now

Here is the same six-way split, measured against Sri Lanka as it actually stands today: manufacturing value-added, industry-origin GDP shares, a digital-economy estimate, health spending, a tourism GDP estimate — the most recent figure each source publishes. Stacked the same way as the target above, so the shift reads at a glance.

Today · Measuredshare of real GDP

A note on "Services." De Mel's model treats Services as everything left over once the other five pillars are counted — the figure that makes the six shares sum to 100%. Sri Lanka's Central Bank uses a different, broader definition: official "Services" already counts most tourism, healthcare and tech activity as sub-categories folded inside that larger total. To compare today's mix against the model's target on the model's own terms, the "Today" bar above uses that same residual convention — manufacturing, agriculture, tech, healthcare and tourism are each measured independently, and Services is what's left. Measured the official CBSL way instead, Services alone is about 56.8% of GDP (Q3 2025) and Industry (which includes manufacturing plus construction, mining and utilities) is about 29.2%. Both framings are shown in the source table below.

Part Four

Who closes the gap

This is a wedge diagram, the shape Princeton's Carbon Mitigation Initiative used to show how several smaller efforts add up to close one large gap. There it was seven technologies closing a gap in emissions. Here it's six sectors closing the gap between an economy that simply stood still at 2025's size and one that reaches $1.19 trillion by 2048. Think of it as an orchard: some trees are already mature and bearing a full crop, some were planted last spring and are still mostly root, and the harvest in any given year comes from every tree together, the tallest one included. The flat line below is today's GDP, held constant, as if no new trees were ever planted. The gold line is the model's actual path. Every wedge starts at zero in 2025 — each sector's dollar contribution measured against its own 2025 level — and widens along the same convergence curve as the mix above, stacked in the same order, until together they fill the entire gap by 2048.

$1.11T Total growth to explain by 2048 — the gap between a flat $84.4B and the model's $1.19T. Services alone accounts for $505.6B of it, still the single largest wedge, even as its share of the economy shrinks.

A big slower slice still beats a small fast one. Tech's share of GDP nearly triples by 2048. Healthcare's nearly triples too — the two fastest-growing lines in the mix, and the two a headline would reach for first. Services starts from a base roughly fifteen times the size of either one, so even compounding far slower in percentage terms, its wedge still runs wider in dollars than Tech's and Healthcare's combined. A young tree growing 20% a year is still a young tree. Rate and contribution are different measurements, and it's easy to read a chart of percentages and come away admiring the wrong sector.

Part Five

Where every number came from

Today's column is measured. The 2048 column is de Mel's model. Nothing here is rounded for effect.

Sector shares of real GDP, today vs. the 2048 target
Sector	Today	2048 target	Source for "today"

The pie gets fourteen times bigger. The slices barely resemble the ones being cut today. An owner needs both facts, the size and the shape together, to believe the number in the speech.

Part of the Sri Lanka 2048 project. See also An Owner's Look at the Numbers for the per-capita income path this GDP figure feeds into.