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National origin of complaints registered and inquiries opened by the European Ombudsman in 2019
| Country | Number of complaints registered | Number of inquiries opened |
| Spain | 285 | 47 |
| Germany | 227 | 61 |
| Belgium | 203 | 88 |
| United kingdom | 174 | 30 |
| Poland | 157 | 10 |
| France | 118 | 26 |
| Italy | 94 | 29 |
| Portugal | 72 | 7 |
| Romania | 65 | 8 |
| Greece | 58 | 19 |
| Netherlands | 56 | 15 |
| Bulgaria | 52 | 8 |
| Sweden | 51 | 19 |
| Czech republic | 44 | 8 |
| Ireland | 40 | 9 |
| Croatia | 38 | 7 |
| Austria | 36 | 9 |
| Hungary | 33 | 6 |
| Finland | 28 | 2 |
| Slovenia | 26 | 1 |
| Luxembourg | 22 | 7 |
| Denmark | 17 | 5 |
| Malta | 17 | 6 |
| Cyprus | 16 | 3 |
| Lithuania | 14 | 5 |
| Slovakia | 12 | 5 |
| Latvia | 10 | 1 |
| Estonia | 7 | 1 |
| Other countries | 159 | 11 |
| Not known | 40 | 3 |
| Total | 2 171 | 456 |