I've gone through the entire world's import/export balance, and then sorted it by GDP, population, and made per capita calculations based on those figures. Some results (data is wrong in various places: Iran does not have a net of -13bn, but a surplus of about 30bn, but by and large the primary nations are accurate).
Asia:
China - Net: 1,538,011 ($16.64 trillion) (1,087)
Japan - Net: 101,249 ($5.39 trillion) (799)
India - Net: 122,694 ($3.31 trillion) (88)
South Korea - Net: 216,045 ($1.76 trillion) (4,193)
Saudi Arabia - Net: 123,212 ($0.79 trillion) (3,536)
Turkey - Net: 34,867 ($1.46 trillion) (432)
Israel - Net: -16,663 ($0.40 trillion) (-2,078)
United Arab Emirates - Net: 43,737 ($0.42 trillion) (4,418)
Iran - Net: -13,376 ($0.54 trillion) (-166)
Singapore - Net: 128,670 ($0.64 trillion) (22,948)
Malaysia - Net: 109,511 ($0.35 trillion) (3,457)
Iraq - Net: -48,031 ($0.19 trillion) (-1,215)
Kazakhstan - Net: 18,724 ($0.53 trillion) (1,066)
Europe:
Germany - Net: 454,530 ($4.24 trillion) (5,458)
United Kingdom - Net: -109,322 ($3.16 trillion) (-1,616)
France - Net: 254 ($2.95 trillion) (4)
Italy - Net: 198,131 ($2.24 trillion) (3,316)
Netherlands - Net: 95,341 ($1.04 trillion) (5,552)
Switzerland - Net: 89,171 ($0.78 trillion) (10,607)
Poland - Net: 70,653 ($0.64 trillion) (1,854)
Sweden - Net: 40,011 ($0.61 trillion) (4,057)
Belgium - Net: 240,667 ($0.63 trillion) (20,696)
Norway - Net: 79,056 ($0.72 trillion) (14,583)
Austria - Net: 30,727 ($0.51 trillion) (3,459)
Ireland - Net: 92,027 ($0.43 trillion) (17,663)
Denmark - Net: 27,453 ($0.37 trillion) (4,759)
Finland - Net: 13,463 ($0.29 trillion) (2,426)
Portugal - Net: -2,441 ($0.24 trillion) (-241)
Greece - Net: -9,062 ($0.20 trillion) (-847)
Hungary - Net: 25,902 ($0.17 trillion) (2,661)
Romania - Net: -4,741 ($0.27 trillion) (-238)
North America:
United States - Net: -653,117 ($22.68 trillion) (-1,970)
Canada - Net: 98,725 ($1.74 trillion) (2,611)
Mexico - Net: 27,302 ($1.32 trillion) (214)
South America:
Brazil - Net: 121,880 ($1.45 trillion) (575)
Colombia - Net: -3,000 ($0.31 trillion) (-61)
Argentina - Net: 35,483 ($0.45 trillion) (802)
Africa:
Nigeria - Net: -5,393 ($0.50 trillion) (-26)
South Africa - Net: -53,997 ($0.36 trillion) (-1,363)
Oceania:
Australia - Net: 142,777 ($1.38 trillion) (5,673)
New Zealand - Net: 6,196 ($0.24 trillion) (1,264)
Middle East:
Qatar - Net: 46,118 ($0.20 trillion) (29,815)
Kuwait - Net: 32,206 ($0.14 trillion) (7,330)
Interesting results (surplus figures as % of GDP):
Belgium: 38% (surplus: 240,667 million)
Ireland: 21% (surplus: 92,027 million)
Germany: 11% (surplus: 454,530 million)
Switzerland: 11% (surplus: 89,171 million)
Norway: 11% (surplus: 79,056 million)
Poland: 11% (surplus: 70,653 million)
Netherlands: 9% (surplus: 95,341 million)
Italy: 9% (surplus: 198,131 million)
Denmark: 7% (surplus: 27,453 million)
Austria: 6% (surplus: 30,727 million)
Hungary: 5% (surplus: 25,902 million)
Sweden: 5% (surplus: 40,011 million)
Finland: 5% (surplus: 13,463 million)
France: 0% (balance: 254 million)
Portugal: -1% (deficit: -2,441 million)
Romania: -2% (deficit: -4,741 million)
United Kingdom: -3% (deficit: -109,322 million)
Greece: -5% (deficit: -9,062 million)