| Country | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Argentina | | | $29 | | | | |
| Armenia | | $15,545 | | | | | |
| Australia | | | | | $392,010 | | |
| Austria | $997 | | | $51 | $61 | $273 | |
| Belgium | | | | | $184 | | |
| Botswana | | | $1,809 | | $935 | | |
| Brazil | | | $500 | | | | |
| Canada | | | $8,785 | | | | $67,444 |
| Chile | $1,997 | $1,750 | | $1,000 | | $900 | |
| Costa Rica | | | | | $607 | | |
| Czech Republic | | | $167,826 | | | | |
| Denmark | | | $7,046 | $37,545 | | | |
| Egypt | $8,400 | | $1,302 | | | | |
| Finland | | | | | $2,650 | | |
| France | | $5,021 | | | | $1,326 | |
| Gabon | | $1,914 | | | | | |
| Germany | | | $52,000 | $69,000 | | $3,975 | |
| Hong Kong | | | | | | | $9,068 |
| India | | | $238 | | $17,833 | | |
| Indonesia | | $700 | | | | | $5,000 |
| Japan | | $2,965 | $32,299 | | $35,848 | | |
| Kazakhstan | | | | $50 | $318 | | |
| Kenya | | | | $58 | $167 | | |
| Latvia | | | | $6 | | | |
| Malaysia | $4,426 | | | | | | |
| Namibia | | $1,734 | $825 | $492 | | | |
| Netherlands | $485,030 | $119,352 | $188,077 | $160,620 | | | |
| Norway | $914,361 | | | | | | |
| Portugal | | | | $15 | | | |
| Qatar | $275 | | $369 | $58,774 | $432,697 | | |
| Romania | | | | $100 | | | |
| Serbia | | | | | | $938 | |
| Singapore | | $2,605 | $404 | $4,963 | $31,459 | $938 | |
| South Africa | $5,195 | $2,859 | $102,079 | $8,872 | $47,394 | $11,373 | $19,761 |
| Sudan | | | | $4,762 | | | |
| Sweden | $804 | | $9,641 | $616 | $131 | $278 | |
| Switzerland | $6,062 | | | | $184 | $72 | $96 |
| Thailand | | | | | $52 | | $5,960 |
| Trinidad and Tobago | | | | | $149 | | |
| Tunisia | | | $166 | | | | |
| Turkey | | | | | $1,000 | | |
| Ukraine | $225,353 | $439,533 | $628,312 | $592,310 | | $429,467 | $249,953 |
| United Arab Emirates | | | $3,393 | | | | |
| United Kingdom | | | | | | | $16,030 |
| United States | $244,819 | $94,059 | $82,310 | $553,090 | $173,251 | $768,146 | $848,815 |
| Yemen | | | | $2,408 | | | |
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