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The 2005 Corruption Perceptions Index
Explanatory notes
CPI 2005 Score relates to perceptions of the degree of corruption as seen by business people, and country analysts, and ranges between 10 (highly clean) and 0 (highly corrupt).
Surveys Used refers to the number of surveys that assessed a country's performance. A total of 18 surveys and expert assessments were used, and at least three surveys were required for a country to be included in the CPI.
Standard Deviation indicates differences in the values of the sources. As indicated by colors, values below 0.5 indicate agreement, values between 0.5 and 0.9 indicate some agreement, while values equal or larger than 1 indicate disagreement.
High-Low Range provides the highest and lowest values of the different sources.
90 percent confidence range provides a range of possible values of the CPI score. This reflects how a country's score may vary, depending on measurement precision. With 5 percent probability the score is above this range and with another 5 percent it is below. However, particularly when only few sources (n) are availbale, an unbiased estimate of the mean coverage probability is lower than the nominal value of 90%. It is 65.3% for n=3, 73.6% for n=4, 78.4% for n=5, 80.2% for n=6 and 81.8% for n=7.
| Country Rank | Country | 2005 CPI Score | Surveys Used | Standard Deviation | High-Low Range | Confidence range |
| 1 | Iceland | 9.7 | 8 | 0.2 | 9.3 - 9.8 | 9.5 - 9.7 |
| 2 | Finland | 9.6 | 9 | 0.2 | 9.3 - 9.8 | 9.5 - 9.7 |
| New Zealand | 9.6 | 9 | 0.2 | 9.3 - 9.7 | 9.5 - 9.7 | |
| 4 | Denmark | 9.5 | 10 | 0.3 | 8.7 - 9.8 | 9.3 - 9.6 |
| 5 | Singapore | 9.4 | 12 | 0.2 | 9.0 - 9.7 | 9.3 - 9.5 |
| 6 | Sweden | 9.2 | 10 | 0.3 | 8.7 - 9.6 | 9.0 - 9.3 |
| 7 | Switzerland | 9.1 | 9 | 0.3 | 8.5 - 9.4 | 8.9 - 9.2 |
| 8 | Norway | 8.9 | 9 | 0.6 | 7.9 - 9.5 | 8.5 - 9.1 |
| 9 | Australia | 8.8 | 13 | 0.8 | 6.7 - 9.5 | 8.4 - 9.1 |
| 10 | Austria | 8.7 | 9 | 0.5 | 8.1 - 9.3 | 8.4 - 9.0 |
| 11 | Netherlands | 8.6 | 9 | 0.5 | 7.8 - 9.4 | 8.3 - 8.9 |
| United Kingdom | 8.6 | 11 | 0.5 | 7.7 - 9.3 | 8.3 - 8.8 | |
| 13 | Luxembourg | 8.5 | 8 | 0.7 | 7.7 - 9.6 | 8.1 - 8.9 |
| 14 | Canada | 8.4 | 11 | 0.9 | 6.5 - 9.4 | 7.9 - 8.8 |
| 15 | Hong Kong | 8.3 | 12 | 1.1 | 5.5 - 9.4 | 7.7 - 8.7 |
| 16 | Germany | 8.2 | 10 | 0.6 | 7.5 - 9.2 | 7.9 - 8.5 |
| 17 | USA | 7.6 | 12 | 1.0 | 5.3 - 8.5 | 7.0 - 8.0 |
| 18 | France | 7.5 | 11 | 0.8 | 5.5 - 9.0 | 7.0 - 7.8 |
| 19 | Belgium | 7.4 | 9 | 0.9 | 5.6 - 9.0 | 6.9 - 7.9 |
| Ireland | 7.4 | 10 | 1.0 | 5.5 - 8.7 | 6.9 - 7.9 | |
| 21 | Chile | 7.3 | 10 | 0.9 | 5.5 - 8.7 | 6.8 - 7.7 |
| Japan | 7.3 | 14 | 1.2 | 5.5 - 9.0 | 6.7 - 7.8 | |
| 23 | Spain | 7 | 10 | 0.7 | 5.6 - 8.1 | 6.6 - 7.4 |
| 24 | Barbados | 6.9 | 3 | 1.2 | 5.7 - 8.1 | 5.7 - 7.3 |
| 25 | Malta | 6.6 | 5 | 1.6 | 5.1 - 9.0 | 5.4 - 7.7 |
| 26 | Portugal | 6.5 | 9 | 1.2 | 5.0 - 7.8 | 5.9 - 7.1 |
| 27 | Estonia | 6.4 | 11 | 1.1 | 5.1 - 9.0 | 6.0 - 7.0 |
| 28 | Israel | 6.3 | 10 | 1.2 | 4.2 - 8.5 | 5.7 - 6.9 |
| Oman | 6.3 | 5 | 1.5 | 4.2 - 8.0 | 5.2 - 7.3 | |
| 30 | United Arab Emirates | 6.2 | 6 | 1.4 | 4.5 - 8.2 | 5.3 - 7.1 |
| 31 | Slovenia | 6.1 | 11 | 1.2 | 4.8 - 8.7 | 5.7 - 6.8 |
| 32 | Botswana | 5.9 | 8 | 1.4 | 4.4 - 8.1 | 5.1 - 6.7 |
| Qatar | 5.9 | 5 | 0.6 | 5.5 - 6.9 | 5.6 - 6.4 | |
| Taiwan | 5.9 | 14 | 1.0 | 3.7 - 7.7 | 5.4 - 6.3 | |
| Uruguay | 5.9 | 6 | 0.6 | 5.5 - 6.9 | 5.6 - 6.4 | |
| 36 | Bahrain | 5.8 | 6 | 0.7 | 4.7 - 6.9 | 5.3 - 6.3 |
| 37 | Cyprus | 5.7 | 5 | 0.5 | 4.9 - 6.2 | 5.3 - 6.0 |
| Jordan | 5.7 | 10 | 1.0 | 3.4 - 6.9 | 5.1 - 6.1 | |
| 39 | Malaysia | 5.1 | 14 | 1.2 | 3.4 - 8.0 | 4.6 - 5.6 |
| 40 | Hungary | 5 | 11 | 0.5 | 4.1 - 5.7 | 4.7 - 5.2 |
| Italy | 5 | 9 | 0.8 | 4.1 - 6.2 | 4.6 - 5.4 | |
| South Korea | 5 | 12 | 0.7 | 3.8 - 5.8 | 4.6 - 5.3 | |
| 43 | Tunisia | 4.9 | 7 | 1.1 | 3.7 - 6.9 | 4.4 - 5.6 |
| 44 | Lithuania | 4.8 | 8 | 0.6 | 4.0 - 5.5 | 4.5 - 5.1 |
| 45 | Kuwait | 4.7 | 6 | 1.0 | 3.4 - 5.7 | 4.0 - 5.2 |
| 46 | South Africa | 4.5 | 11 | 0.6 | 3.4 - 5.6 | 4.2 - 4.8 |
| 47 | Czech Republic | 4.3 | 10 | 1.4 | 2.7 - 7.7 | 3.7 - 5.1 |
| Greece | 4.3 | 9 | 0.8 | 3.7 - 5.7 | 3.9 - 4.7 | |
| Namibia | 4.3 | 8 | 1.0 | 3.4 - 6.2 | 3.8 - 4.9 | |
| Slovakia | 4.3 | 10 | 1.0 | 3.2 - 5.7 | 3.8 - 4.8 | |
| 51 | Costa Rica | 4.2 | 7 | 0.9 | 3.4 - 5.5 | 3.7 - 4.7 |
| El Salvador | 4.2 | 6 | 1.1 | 2.6 - 5.5 | 3.5 - 4.8 | |
| Latvia | 4.2 | 7 | 0.7 | 3.6 - 5.5 | 3.8 - 4.6 | |
| Mauritius | 4.2 | 6 | 1.2 | 2.5 - 5.7 | 3.4 - 5.0 | |
| 55 | Bulgaria | 4 | 8 | 1.1 | 2.7 - 5.6 | 3.4 - 4.6 |
| Colombia | 4 | 9 | 0.8 | 2.7 - 5.6 | 3.6 - 4.4 | |
| Fiji | 4 | 3 | 1.0 | 3.4 - 5.1 | 3.4 - 4.6 | |
| Seychelles | 4 | 3 | 0.4 | 3.5 - 4.2 | 3.5 - 4.2 | |
| 59 | Cuba | 3.8 | 4 | 1.6 | 1.7 - 5.5 | 2.3 - 4.7 |
| Thailand | 3.8 | 13 | 0.6 | 2.6 - 4.7 | 3.5 - 4.1 | |
| Trinidad and Tobago | 3.8 | 6 | 1.0 | 2.7 - 5.5 | 3.3 - 4.5 | |
| 62 | Belize | 3.7 | 3 | 0.4 | 3.4 - 4.1 | 3.4 - 4.1 |
| Brazil | 3.7 | 10 | 0.5 | 2.7 - 4.4 | 3.5 - 3.9 | |
| 64 | Jamaica | 3.6 | 6 | 0.3 | 3.4 - 4.1 | 3.4 - 3.8 |
| 65 | Ghana | 3.5 | 8 | 0.8 | 2.6 - 5.1 | 3.2 - 4.0 |
| Mexico | 3.5 | 10 | 0.5 | 2.7 - 4.5 | 3.3 - 3.7 | |
| Panama | 3.5 | 7 | 0.8 | 2.6 - 5.1 | 3.1 - 4.1 | |
| Peru | 3.5 | 7 | 0.6 | 2.6 - 4.1 | 3.1 - 3.8 | |
| Turkey | 3.5 | 11 | 1.0 | 2.2 - 5.3 | 3.1 - 4.0 | |
| 70 | Burkina Faso | 3.4 | 3 | 0.7 | 2.7 - 4.2 | 2.7 - 3.9 |
| Croatia | 3.4 | 7 | 0.4 | 3.0 - 4.2 | 3.2 - 3.7 | |
| Egypt | 3.4 | 9 | 0.8 | 2.3 - 5.1 | 3.0 - 3.9 | |
| Lesotho | 3.4 | 3 | 0.8 | 2.6 - 4.1 | 2.6 - 3.9 | |
| Poland | 3.4 | 11 | 1.0 | 2.5 - 5.7 | 3.0 - 3.9 | |
| Saudi Arabia | 3.4 | 5 | 1.0 | 2.0 - 4.5 | 2.7 - 4.1 | |
| Syria | 3.4 | 5 | 1.1 | 2.2 - 5.1 | 2.8 - 4.2 | |
| 77 | Laos | 3.3 | 3 | 2.0 | 2.1 - 5.5 | 2.1 - 4.4 |
| 78 | China | 3.2 | 14 | 0.6 | 2.2 - 4.1 | 2.9 - 3.5 |
| Morocco | 3.2 | 8 | 0.7 | 2.2 - 4.1 | 2.8 - 3.6 | |
| Senegal | 3.2 | 6 | 0.6 | 2.5 - 4.2 | 2.8 - 3.6 | |
| Sri Lanka | 3.2 | 7 | 0.7 | 2.2 - 4.1 | 2.7 - 3.6 | |
| Suriname | 3.2 | 3 | 1.0 | 2.2 - 4.1 | 2.2 - 3.6 | |
| 83 | Lebanon | 3.1 | 4 | 0.4 | 2.7 - 3.5 | 2.7 - 3.3 |
| Rwanda | 3.1 | 3 | 1.7 | 2.1 - 5.1 | 2.1 - 4.1 | |
| 85 | Dominican Republic | 3 | 6 | 0.8 | 2.0 - 4.2 | 2.5 - 3.6 |
| Mongolia | 3 | 4 | 0.8 | 2.2 - 4.2 | 2.4 - 3.6 | |
| Romania | 3 | 11 | 0.9 | 2.0 - 5.1 | 2.6 - 3.5 | |
| 88 | Armenia | 2.9 | 4 | 0.5 | 2.4 - 3.4 | 2.5 - 3.2 |
| Benin | 2.9 | 5 | 1.3 | 1.7 - 5.1 | 2.1 - 4.0 | |
| Bosnia and Herzegovina | 2.9 | 6 | 0.4 | 2.4 - 3.4 | 2.7 - 3.1 | |
| Gabon | 2.9 | 4 | 1.0 | 2.1 - 4.1 | 2.1 - 3.6 | |
| India | 2.9 | 14 | 0.5 | 2.1 - 3.5 | 2.7 - 3.1 | |
| Iran | 2.9 | 5 | 0.8 | 1.7 - 3.5 | 2.3 - 3.3 | |
| Mali | 2.9 | 8 | 1.2 | 1.5 - 5.1 | 2.3 - 3.6 | |
| Moldova | 2.9 | 5 | 1.1 | 1.9 - 4.6 | 2.3 - 3.7 | |
| Tanzania | 2.9 | 8 | 0.5 | 2.1 - 3.5 | 2.6 - 3.1 | |
| 97 | Algeria | 2.8 | 7 | 0.7 | 2.0 - 4.2 | 2.5 - 3.3 |
| Argentina | 2.8 | 10 | 0.6 | 1.8 - 3.5 | 2.5 - 3.1 | |
| Madagascar | 2.8 | 5 | 1.2 | 1.7 - 4.2 | 1.9 - 3.7 | |
| Malawi | 2.8 | 7 | 0.9 | 2.0 - 4.6 | 2.3 - 3.4 | |
| Mozambique | 2.8 | 8 | 0.6 | 2.1 - 3.5 | 2.4 - 3.1 | |
| Serbia and Montenegro | 2.8 | 7 | 0.7 | 2.2 - 4.1 | 2.5 - 3.3 | |
| 103 | Gambia | 2.7 | 7 | 0.7 | 1.7 - 3.9 | 2.3 - 3.1 |
| Macedonia | 2.7 | 7 | 0.7 | 2.2 - 4.1 | 2.4 - 3.2 | |
| Swaziland | 2.7 | 3 | 0.7 | 2.0 - 3.4 | 2.0 - 3.1 | |
| Yemen | 2.7 | 5 | 0.5 | 2.2 - 3.6 | 2.4 - 3.2 | |
| 107 | Belarus | 2.6 | 5 | 1.4 | 1.7 - 5.1 | 1.9 - 3.8 |
| Eritrea | 2.6 | 3 | 1.3 | 1.7 - 4.2 | 1.7 - 3.5 | |
| Honduras | 2.6 | 7 | 0.6 | 1.6 - 3.5 | 2.2 - 3.0 | |
| Kazakhstan | 2.6 | 6 | 0.8 | 1.8 - 4.1 | 2.2 - 3.2 | |
| Nicaragua | 2.6 | 7 | 0.4 | 2.1 - 3.0 | 2.4 - 2.8 | |
| Palestine | 2.6 | 3 | 0.5 | 2.1 - 3.1 | 2.1 - 2.8 | |
| Ukraine | 2.6 | 8 | 0.3 | 2.2 - 3.0 | 2.4 - 2.8 | |
| Vietnam | 2.6 | 10 | 0.6 | 1.7 - 3.5 | 2.3 - 2.9 | |
| Zambia | 2.6 | 7 | 0.5 | 2.1 - 3.4 | 2.3 - 2.9 | |
| Zimbabwe | 2.6 | 7 | 0.8 | 1.4 - 3.6 | 2.1 - 3.0 | |
| 117 | Afghanistan | 2.5 | 3 | 1.1 | 1.6 - 3.7 | 1.6 - 3.2 |
| Bolivia | 2.5 | 6 | 0.5 | 2.0 - 3.5 | 2.3 - 2.9 | |
| Ecuador | 2.5 | 6 | 0.6 | 1.9 - 3.5 | 2.2 - 2.9 | |
| Guatemala | 2.5 | 7 | 0.6 | 1.7 - 3.5 | 2.1 - 2.8 | |
| Guyana | 2.5 | 3 | 0.4 | 2.0 - 2.7 | 2.0 - 2.7 | |
| Libya | 2.5 | 4 | 0.7 | 1.8 - 3.4 | 2.0 - 3.0 | |
| Nepal | 2.5 | 4 | 0.7 | 1.7 - 3.4 | 1.9 - 3.0 | |
| Philippines | 2.5 | 13 | 0.6 | 1.5 - 3.5 | 2.3 - 2.8 | |
| Uganda | 2.5 | 8 | 0.5 | 2.0 - 3.5 | 2.2 - 2.8 | |
| 126 | Albania | 2.4 | 3 | 0.4 | 2.1 - 2.8 | 2.1 - 2.7 |
| Niger | 2.4 | 4 | 0.3 | 2.1 - 2.7 | 2.2 - 2.6 | |
| Russia | 2.4 | 12 | 0.3 | 1.9 - 3.0 | 2.3 - 2.6 | |
| Sierra Leone | 2.4 | 3 | 0.5 | 2.1 - 3.0 | 2.1 - 2.7 | |
| 130 | Burundi | 2.3 | 3 | 0.3 | 2.1 - 2.7 | 2.1 - 2.5 |
| Cambodia | 2.3 | 4 | 0.5 | 1.7 - 2.7 | 1.9 - 2.5 | |
| Congo, Republic | 2.3 | 4 | 0.4 | 2.0 - 3.0 | 2.1 - 2.6 | |
| Georgia | 2.3 | 6 | 0.5 | 1.7 - 2.7 | 2.0 - 2.6 | |
| Kyrgyzstan | 2.3 | 5 | 0.4 | 1.9 - 2.7 | 2.1 - 2.5 | |
| Papua New Guinea | 2.3 | 4 | 0.5 | 1.7 - 2.7 | 1.9 - 2.6 | |
| Venezuela | 2.3 | 10 | 0.2 | 2.0 - 2.5 | 2.2 - 2.4 | |
| 137 | Azerbaijan | 2.2 | 6 | 0.5 | 1.7 - 3.0 | 1.9 - 2.5 |
| Cameroon | 2.2 | 6 | 0.4 | 1.8 - 2.7 | 2.0 - 2.5 | |
| Ethiopia | 2.2 | 8 | 0.4 | 1.7 - 2.8 | 2.0 - 2.5 | |
| Indonesia | 2.2 | 13 | 0.4 | 1.7 - 3.3 | 2.1 - 2.5 | |
| Iraq | 2.2 | 4 | 1.0 | 1.4 - 3.6 | 1.5 - 2.9 | |
| Liberia | 2.2 | 3 | 0.1 | 2.1 - 2.4 | 2.1 - 2.3 | |
| Uzbekistan | 2.2 | 5 | 0.2 | 2.0 - 2.5 | 2.1 - 2.4 | |
| 144 | Congo, Democratic Republic | 2.1 | 4 | 0.4 | 1.6 - 2.5 | 1.8 - 2.3 |
| Kenya | 2.1 | 8 | 0.5 | 1.4 - 3.0 | 1.8 - 2.4 | |
| Pakistan | 2.1 | 7 | 0.7 | 1.3 - 3.4 | 1.7 - 2.6 | |
| Paraguay | 2.1 | 7 | 0.4 | 1.6 - 2.7 | 1.9 - 2.3 | |
| Somalia | 2.1 | 3 | 0.4 | 1.6 - 2.4 | 1.6 - 2.2 | |
| Sudan | 2.1 | 5 | 0.2 | 1.7 - 2.3 | 1.9 - 2.2 | |
| Tajikistan | 2.1 | 5 | 0.4 | 1.7 - 2.7 | 1.9 - 2.4 | |
| 151 | Angola | 2 | 5 | 0.2 | 1.6 - 2.2 | 1.8 - 2.1 |
| 152 | Cote d?Ivoire | 1.9 | 4 | 0.3 | 1.6 - 2.2 | 1.7 - 2.1 |
| Equatorial Guinea | 1.9 | 3 | 0.3 | 1.6 - 2.2 | 1.6 - 2.1 | |
| Nigeria | 1.9 | 9 | 0.3 | 1.4 - 2.2 | 1.7 - 2.0 | |
| 155 | Haiti | 1.8 | 4 | 0.5 | 1.4 - 2.5 | 1.5 - 2.1 |
| Myanmar | 1.8 | 4 | 0.2 | 1.6 - 2.2 | 1.7 - 2.0 | |
| Turkmenistan | 1.8 | 4 | 0.2 | 1.6 - 2.2 | 1.7 - 2.0 | |
| 158 | Bangladesh | 1.7 | 7 | 0.5 | 1.0 - 2.4 | 1.4 - 2.0 |
| Chad | 1.7 | 6 | 0.6 | 1.0 - 2.7 | 1.3 - 2.1 |