A recent study by Fisman and Miguel used the parking fines accumulated by immune UN diplomats to estimate corruption by country.
A link to the full article is there, but here --- according to the study --- are the countries of the most and least corrupt UN diplomats:
1 KUWAIT
2 EGYPT
3 CHAD
4 SUDAN
5 BULGARIA
6 MOZAMBIQUE
7 ALBANIA
8 ANGOLA
9 SENEGAL
10 PAKISTAN
11 IVORY COAST
12 ZAMBIA
13 MOROCCO
14 ETHIOPIA
15 NIGERIA
16 SYRIA
17 BENIN
18 ZIMBABWE
19 CAMEROON
20 MONTENEGRO & SERBIA
.
.
.
125 UNITED KINGDOM
126 NETHERLANDS
127 UNTED ARAB EMIRATES
128 AUSTALIA
129 AZERBAIJAN
130 BURKINA FASO
131 CENTRAL AFRICAN REPUBLIC
132 CANADA
133 COLOMBIA
134 DENMARK
135 ECUADOR
136 GREECE
137 IRELAND
138 ISRAEL
139 JAMAICA
140 JAPAN
141 LATVIA
142 NORWAY
143 OMAN
144 PANAMA
145 SWEDEN
146 TURKEY
A link to the full article is there, but here --- according to the study --- are the countries of the most and least corrupt UN diplomats:
1 KUWAIT
2 EGYPT
3 CHAD
4 SUDAN
5 BULGARIA
6 MOZAMBIQUE
7 ALBANIA
8 ANGOLA
9 SENEGAL
10 PAKISTAN
11 IVORY COAST
12 ZAMBIA
13 MOROCCO
14 ETHIOPIA
15 NIGERIA
16 SYRIA
17 BENIN
18 ZIMBABWE
19 CAMEROON
20 MONTENEGRO & SERBIA
.
.
.
125 UNITED KINGDOM
126 NETHERLANDS
127 UNTED ARAB EMIRATES
128 AUSTALIA
129 AZERBAIJAN
130 BURKINA FASO
131 CENTRAL AFRICAN REPUBLIC
132 CANADA
133 COLOMBIA
134 DENMARK
135 ECUADOR
136 GREECE
137 IRELAND
138 ISRAEL
139 JAMAICA
140 JAPAN
141 LATVIA
142 NORWAY
143 OMAN
144 PANAMA
145 SWEDEN
146 TURKEY