The trade openness index — the sum of imports and exports as a percentage of GDP — measures San Marino's degree of integration in the international economy. Values above 300% of GDP indicate an economy heavily oriented toward external trade.
| Year | Value (% PIL) | YoY change | vs 2015 |
|---|---|---|---|
| 2023 | 341 | -7.9% | +6.1% |
| 2022 | 370.4 | +8.1% | +15.2% |
| 2021 | 342.5 | +12.3% | +6.6% |
| 2020 | 304.9 | -0.8% | -5.1% |
| 2019 | 307.3 | -0.7% | -4.4% |
| 2018 | 309.5 | -1.4% | -3.7% |
| 2017 | 313.9 | -1.9% | -2.3% |
| 2016 | 320.1 | -0.4% | -0.4% |
| 2015 | 321.4 | — | base |
Calculated as (Exports + Imports) / GDP × 100. Values around 300–350% place San Marino among the world's most open economies, comparable to Hong Kong and Singapore.
OESM — Economic Observatory of San Marino. (2026). Trade openness (% of GDP) — San Marino, 2015–2023 [Dataset]. Retrieved 13 April 2026 from https://oesm.net/en/data/san-marino-trade-openness
OESM — Economic Observatory of San Marino. "Trade openness (% of GDP) — San Marino." Dataset. Accessed 13 April 2026. https://oesm.net/en/data/san-marino-trade-openness.
@dataset{oesm2026_trade_openness_en,
author = {OESM -- Economic Observatory of San Marino},
title = {Trade openness (% of GDP) -- San Marino, 2015--2023},
year = {2026},
url = {https://oesm.net/en/data/san-marino-trade-openness},
note = {Accessed: 13 April 2026},
license = {CC BY 4.0},
}