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Switzerland is the world's most competitive economy, according to an annual survey published by the World Economic Forum. The United States' competitiveness is rising again after four years of decline, though northern European countries continue to dominate the rankings.

Here is a look at the world's top — and bottom — 10 countries in term of competitiveness.

Most competitive: Switzerland
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Rank 2013: No. 1
Rank 2012: No. 1

Singapore
Associated Press

Rank 2013: 2
Rank 2012: 2

Finland
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Rank 2013: 3
Rank 2012: 3

Germany
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Rank 2013: 4
Rank 2012: 6

United States
Associated Press

Rank 2013: 5
Rank 2012: 7

Sweden
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Rank 2013: 6
Rank 2012: 4

Hong Kong
Associated Press

Rank 2013: 7
Rank 2012: 9

Netherlands
Associated Press

Rank 2013: 8
Rank 2012: 5

Japan
Associated Press

Rank 2013: 9
Rank 2012: 10

United Kingdom
Associated Press

Rank 2013: 10
Rank 2012: 8

Least competitive: Chad
Associated Press

Rank 2013: 148
Rank 2012: 139

Guinea
Associated Press

Rank 2013: 147
Rank 2012: 141

Burundi
Associated Press

Rank 2013: 146
Rank 2012: 144

Yemen
Associated Press

Rank 2013: 145
Rank 2012: 140

Sierra Leone
Associated Press

Rank 2013: 144
Rank 2012: 143

Haiti
Associated Press

Rank 2013: 143
Rank 2012: 142

Angola
Associated Press

Rank 2013: 142
Rank 2012: n/a

Mauritania
Associated Press

Rank 2013: 141
Rank 2012: 134

Burkina Faso
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Rank 2013: 140
Rank 2012: 133

Myanmar
Associated Press

Rank 2013: 139
Rank 2012: n/a

Myanmar leads out as the 10th least competitive economy, according to the report.