united states

afghanistan, aland islands, albania, algeria, american samoa, andorra, angola, anguilla, antigua & barbuda, argentina, armenia, aruba, australia, austria, azerbaijan, bahamas, bahrain, bangladesh, barbados, belarus, belgium, belize, benin, bermuda, bhutan, bolivia, bonaire, bosnia & herzegovina, botswana, brazil, british indian ocean, british virgin islands, brunei, bulgaria, burkina faso, burundi, cambodia, cameroon, canada, cape verde, cayman islands, central african rep., chad, chile, china, christmas island, cocos islands, colombia, comoros, congo, cook islands, costa rica, croatia, cuba, curacao, cyprus, czech republic, democratic congo, denmark, djibouti, dominica, dominican republic, east timor, ecuador, egypt, el salvador, equatorial guinea, eritrea, estonia, ethiopia, falklands / malvinas, faroe islands, fiji, finland, france, french guiana, french polynesia, gabon, gambia, georgia, germany, ghana, gibraltar, greece, greenland, grenada, guadaloupe, guam, guatemala, guernsey, guinea, guinea-bissau, guyana, haiti, honduras, hong kong, hungary, iceland, india, indonesia, iran, iraq, ireland, isle of man, israel, italy, ivory coast, jamaica, japan, jersey, jordan, kazakhstan, kenya, kiribati, kuwait, kyrgyzstan, laos, latvia, lebanon, lesotho, liberia, libya, liechtenstein, lithuania, luxembourg, macao, macedonia, madagascar, malawi, malaysia, maldives, mali, malta, marshall islands, martinique, mauritania, mauritius, mayotte, mexico, micronesia, moldova, monaco, mongolia, montenegro, montserrat, morocco, mozambique, myanmar, namibia, nauru, nepal, netherlands, new caledonia, new zealand, nicaragua, niger, nigeria, niue, norfolk island, north korea, north marianas, norway, oman, pakistan, palau, palestine, panama, papua new guinea, paraguay, peru, philippines, poland, portugal, puerto rico, qatar, reunion, romania, russia, rwanda, samoa, san marino, sao tome & principe, saudi arabia, senegal, serbia, seychelles, sierra leone, singapore, sint maarten, slovakia, slovenia, solomon islands, somalia, south africa, south korea, south sudan, spain, sri lanka, st. barthelemy, st. helena, st. kitts & nevis, st. lucia, st. martin, st. pierre & miquelon, st. vincent & grenadines, sudan, suriname, swaziland, sweden, switzerland, syria, taiwan, tajikistan, tanzania, thailand, togo, tokelau, tonga, trinidad & tobago, tunisia, turkey, turkmenistan, turks & caicos, tuvalu, u.s. virgin islands, uganda, ukraine, united arab emirates, united kingdom, uruguay, uzbekistan, vanuatu, vatican city, venezuela, vietnam, wallis & futuna, western sahara, yemen, zambia, zimbabwe