Statistics for Official Names of Countries

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Common name	Formal name	% Correct
China	People's Republic of China	96%
United States	United States of America	91%
Russia	Russian Federation	83%
United Kingdom	United Kingdom of Great Britain and Northern Ireland	70%
Taiwan	Republic of China	65%
South Korea	Republic of Korea	65%
France	French Republic	57%
Italy	Italian Republic	57%
Japan	Japan	57%
North Korea	Democratic People's Republic of Korea	52%
Spain	Kingdom of Spain	52%
Australia	Commonwealth of Australia	48%
Germany	Federal Republic of Germany	48%
Iran	Islamic Republic of Iran	48%
Switzerland	Swiss Confederation	48%
Oman	Sultanate of Oman	43%
Canada	Canada	39%
Monaco	Principality of Monaco	39%
Israel	State of Israel	35%
Luxembourg	Grand Duchy of Luxembourg	30%
Jordan	Hashemite Kingdom of Jordan	30%
Bolivia	Plurinational State of Bolivia	30%
Syria	Syrian Arab Republic	30%
Mexico	United Mexican States	30%
Ivory Coast	Republic of Côte d'Ivoire	26%
Uruguay	Oriental Republic of Uruguay	22%
Myanmar	Republic of the Union of Myanmar	22%
Brunei	Nation of Brunei, the Abode of Peace	17%