The majority of the people of Ireland are Celtic. There is a small English minority. The overwhelming majority of the people of Ireland are Roman Catholic. There is a small Anglican minority. Ireland has traditionally had a large net migration, as thousands every year left Ireland for the new world. In recent years that trend has been reversed.
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| 1990 | 2000 | 2010 | 2020 | |
| Population, total (millions) | 3.51 | 3.81 | 4.56 | 4.99 |
| Population growth (annual %) | 0.1 | 1.3 | 0.5 | 1 |
| Surface area (sq. km) (thousands) | 70.3 | 70.3 | 70.3 | 70.3 |
| Population density (people per sq. km of land area) | 51 | 55.2 | 66.2 | 72.4 |
| Poverty headcount ratio at national poverty lines (% of population) | .. | .. | .. | 13.9 |
| GDP growth (annual %) | 8.5 | 9.4 | 1.8 | 5.9 |
| Inflation, GDP deflator (annual %) | -0.7 | 6.9 | -3 | -1.2 |
| Agriculture, forestry, and fishing, value added (% of GDP) | .. | 3 | 1 | 1 |
| Industry (including construction), value added (% of GDP) | .. | 32 | 23 | 38 |
| Exports of goods and services (% of GDP) | 55 | 94 | 103 | 131 |
| Imports of goods and services (% of GDP) | 50 | 81 | 87 | 109 |
| Gross capital formation (% of GDP) | 22 | 25 | 17 | 41 |
| Revenue, excluding grants (% of GDP) | 32.3 | 32.9 | 31 | 23.7 |
| Net lending (+) / net borrowing (-) (% of GDP) | -2.4 | 5 | -32.1 | 0.6 |
| States and markets | ||||
| Time required to start a business (days) | .. | 24 | 19 | 11 |
| Domestic credit provided by financial sector (% of GDP) | .. | .. | .. | .. |
| Tax revenue (% of GDP) | 25.4 | 26.3 | 21.8 | 17.7 |
| Military expenditure (% of GDP) | 1.2 | 0.7 | 0.6 | 0.3 |
| Mobile cellular subscriptions (per 100 people) | 0.7 | 65.1 | 103.2 | 106 |
| Individuals using the Internet (% of population) | 0 | 17.9 | 69.9 | 92 |
| High-technology exports (% of manufactured exports) | .. | .. | 23 | 26 |
| Statistical Capacity Score (Overall Average) (scale 0 - 100) | .. | .. | .. | .. |
| Global links | ||||
| Merchandise trade (% of GDP) | 90 | 128 | 80 | 65 |
| Net barter terms of trade index (2000 = 100) | .. | 100 | 101 | 92 |
| External debt stocks, total (DOD, current US$) (millions) | .. | .. | .. | .. |
| Total debt service (% of exports of goods, services and primary income) | .. | .. | .. | .. |
| Net migration (thousands) | -15 | 201 | -112 | 118 |
| Personal remittances, received (current US$) (millions) | 286 | 252 | 658 | 276 |
| Foreign direct investment, net inflows (BoP, current US$) (millions) | 622 | 25,779 | 37,748 | 32,452 |
| Net official development assistance received (current US$) (millions) | .. | .. | .. | .. |