CINXE.COM

Just a moment...

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "www.oecd.org",cType: 'managed',cRay: '91383dcfcae84e24',cH: 'x58IM2uLOqstQyWArbEQhYAWKdl_J.c873dXyoTZh.w-1739821145-1.2.1.1-sKKc_CVQH5Ro4qK9wI1bvV4wUkE1ZZb5s6dGn.b2weICP4taodQowwoqDq5hGYwm',cUPMDTk: "\/en\/countries\/bulgaria.html?__cf_chl_tk=rbHqgZBqLeAMx7dAufdQB5AsPVfZA2Bcyfk.vD_WAro-1739821145-1.0.1.1-P2CRcHsQ5ZNXuY3jZLJctn2xNGj.OyB_35i8jHYiZZA",cFPWv: 'g',cITimeS: '1739821145',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/en\/countries\/bulgaria.html?__cf_chl_f_tk=rbHqgZBqLeAMx7dAufdQB5AsPVfZA2Bcyfk.vD_WAro-1739821145-1.0.1.1-P2CRcHsQ5ZNXuY3jZLJctn2xNGj.OyB_35i8jHYiZZA",md: "O1JhDA6FGIPVWri1xVr.R5EJRvvO6NTmdB3kZ_3ihKE-1739821145-1.2.1.1-CLRVO_ohEntc5srLTXyvd7LLHn_uphzAbM5ZFaAleiEv4AVFaCWofUSK90o7Uq7gp2ji_oUqGuJ7bmHGqyelww2IfMwWBVgDI2sFi3HrDLaq9I9QPffXJfFj7WeMU1QtxYe6_YYgwdfPbD4cy_ZjseXZTHcdKZFEHe8BT7u6AK9aEn6hX55biET09JbsKxzai1PotbyYAQUnUwRR2E8.T3mKveBak3Tw5qQJ5NPrQA.CC6g.Y5wGMxQaZeia5Grx.KsklLEtcIGf_8VooqzOnP9bJcNVFftKPuDWApxrRzv0hWeGq5l7TqIXPzI0i73juxHd6xd9KqSpXT64kITfqwtNxZby77pmxiUCsdo5GARlTRvu7eFxLIkIjBhfRDNCq6_y9RH976YwUpsxHmDMBKf1zgMfH4FFPnZCq.MnzUEhd7Slv73qoOEzodGTXGNO8mWQp72LgqdgYLkp3D1chVZpyqQ4d.6H0.5jM47aCTmqB8WmYaWVyGtoOqkEvDpolaJr5VxVSfiMIlsEUj282ACS9PwShy7B53IYdPNDlZzS1STehtfdedQiYG9E06S4qi5ImRgTlBcwoZCy0GGiIVslfQd9YJnKhXCtudwnwbaACa9XNMF40OJa8D2uDMKw6Cv0rezohS_J8YuiMM.aBjfklZPRTHXneWf3IarZiMuRjI4UwXO.WpvKDfWxrfrhDSs1yfSGTMrpRf8SeH7vBYORZYQ6ATXZEL0nWcv8lGsqwYV9lrv8us9LJCN49R0Lske_T6VRu26efo7XaeOiMPEzrhu8.EtwRxuWJfrbQBopizUGlJJk1pheQXsqbnRSTn8rM_.L498U4qZ6VVCMAzs6kRPBiKlq3eNhyrhKcplMtkDSSgqtIayF_48Uu9KveZJrmqa_1OWzM5h56hDw900o8DA_kcGGFA6pLic3RrI.wUCXQjics46LrN3nbRzKX.Atl.HqIw9.MJfYd1IucRr.hQMLq8paih_mYdm5mRCRFCPfxeTYnBRFlOaewVgY6Ba9dlSVx0qg3jL0fUYGe7Y9EbzDFp2wXaSmYWDG.iunGcENRzB58J3xv8yINMW0rEgDF88i.JnZRqYYd0IHVyiYAvTOYBis2h51SrwdX8q.lIVzEgCMYqMfEnmCOo_PjoasSzttBxDPx1ZkGxWlQwRPxEAJKVkPJTj3TIrtypiWmMazJb9kWTd6zxz531ruL4MHvw0uBwYx_VxwOGgZhqXmLMrUoW7r1Xh.y_ND9FsNBu2oI7GIWg57AdW7bYX9uuqT4jjZnvE_HEhp_XPU0D1QI3Cj6UhyQzo755khCJLk0zr4sWG6FBFXxt3oC82AKAZRByJEkdyUOtUeuOxzdYKyA9QSeSsC8s54xlma6s7dcU7HciMxbU7lG7XEDxoTumUR.HOGiJO42gFfvmkBuWDtEgRh5FGnmE.r0qTFWDiks8C2tMFHXAtiVTyhp.4y8GtOvPIdFrcE8HzfhSyyBnJa2Fk1w2jZnv5xF.K7eJpcgZ5mm8y3vlfCj5Q8vUDArcTsc.2m0o0MZaj_epwCZ8uAGjmbrbKQkN8s7SSdFg3ESuBxIX3NtDWRw3KgVOPE.kX6fVWIaEwCZOsKdBOp0shkVLjF475ERiSwO.8xgUERcGle4a6TN0jDLkUvMZ7Z85JyWFmqcVqb9OhTPvJwopYl3DPCxRYBys9kSvBOntO1i.1XBWYeAdpIMSb1WT4WmNJdJr536Rh.emJ_xa8X_6Y9f5nhnNNHbcV6UMkyiU.O.u._JZBSjMWJNzr3p_QhgP51.WPPTkc48U5sWyBOIjwAsAGAriYZD6YXautY.4mWFcY5cCChGsOsucZn1aas.JLqXUXUc9rqLjxln09ZHAnCeE._4JhUuZ0qE3MvdDv5iNd3.G059Ov2jOLD2j0UXyK8hFlJttDFYtldh4IqwGKtl4huRK3PXaGejCFj3Io4yGLbkodrNbLfT67ZRKbjZM9R7IhrmRlBOpmWTZYI60cJyrs9Y_4Ba1.gYt1NbiAXFemLB4Sz4BsXbj13EseruwUWFbRuvPy7oXJZUfE2ilvidO9ZaXYg7HpP_VQgYbRW5OMO08R3QeEKtvG6C0.4gy6Uzc7qO58Uyppm2NJbMNhziK8Mj3nfaTtLKrghlWnCWt5eJQpb9TtVT4rjprXMwWu1jD1sFJXGlRwu3RJPe5I5Pit42m.m3Rmi0Fs_mcMQpxh29AtnW7PSFso2222sFpBDmgZ6eG2Y1ip4jgXbZ.LOzxIr5jYvyy0.muQVfIwl2PM8qhdc4_ktR4EFeVUBctfVHtcZ_TeqAfGJ4PZle95IeNUCYBjCKidVjukM0714QHYPVfcTTjmGT5I_CmIJkfoXTWvVRNzObjJVqqOd87KjVWs5gDvcsb791o9mdg_djQMvnRfObrTDLMsNhtB3W3HUbPTIBSM4bP5uEIzUeSnrPNQZ4xbkY_qj0rFnSNQFlRaoeasOFEO5vTiDi_FjVGSchzIEVVWAvruZVWn_EF2gJGArAK3wD2AGb7xAuVrOBo8xTHaLw2UjoKsm7.zU",mdrd: "eAWg5eEYgLTR96le.3EHHAI82JltuYTc9_7ZyQeDG38-1739821145-1.2.1.1-e8Iz5_P94Izj5YqydBR0gmwawibvB2g7I_52y8Aw5cQlF2lo7ekbKWjv0o2V7B1ftYiaMOzWdt4kKYW4mDHfM2DaHzbvF8HSmE7ZRshcr4yaS45i7Mh5PYJDplIjFJJUIp_V4QBhgygh2RHGcmQxmS7noG_ku4Ky00jLeV7jGR5k2XkhjmkpcP7cvWV5A2XTRCNpk8aZN5HMMOgZZ4N888Af36Dmebj3dOAqkWyJppFEbJvtjBlxscckQdJOsPGFfIOmLsk34niOnF8XaT.JdPdeSuYwB0bT5xZN0RNWa1.D4te.LoKjJHFYJbvns0qHCNXifGODMVC3Fe92hYDJ6rAaC0maoUdBZKry7Ls_To2y1_Ta8uGHPhhBEbqJcYFKgKqeF5Nv8jMFvnZcxiCwU6WKOambpY0VVsJicUlo6HpTepE8vfQ6mqVU3I9sXXmpIdafP7zTw5IcKUYi__R6s.L0DJCvyGjSC4s9TVmkASuqwsdfNeBKUeskIUoUviBhZcUC4pi8rHoAuyDJWeoVCFW3Tqo.csD8nwOXVIVG8Nn2UKJdnOpnfg6MN9ANFGxSvwy392ZQcMwQU_IhFpb1jRNzczSeLr8wvtlW7Pch0RGZr3Sp217KlEC74NjyMR0aByrZzVRhBahkz3..dxM3QZiNRi1.tLHaE51WkqybRO73US_a6TcpOPB5YWaDzrynrgIuIq5yFxUTilW32NTEH4o4a7GomSmb13NdaeNrizvdKIookJjZA3BQQEfhh6weiUPMGGv5jmVgPFlOXjtegR8SeafjUSRUXItJmWSqj.Bhdcgbktym4XYEw4PqRMzaBCVkkOWIhMA1PVFgWIBh_gaH4a.ioaieN1Ho4bDWLW9h3smt0yXRpRn3seHtTzonO88R1h3Hg9tPNkl0fyo8kLUHoZj1vPFl1rSekrZ.Y15fh9gwKqxkmEDoN2ql74eERl_0O6M7eN4NqlmZAzyqbkJWl6GR_YPcbMQ8CaZURxRQJSJlUkLtIm7SSaUnckrcoLe0p97ziKBnGzPasjikOWJK_yBgmxj2RVhUAib9i2qeGlj31MNRLdrbVBR4PlrK5K9JO0r4VoBBHd88IlxM7lfzPl9QxrzjJkEINX0d4_YPOxhnZpScg0C9G_sF_m_JPd.wqIwujUenwtv3lMKPyq..M6Uth4g0BexFDhBuy4YLLjLFZJ5_l5daP_DGX1ePPR3pmBPIzcRnmtmzHVdecpgcK6W3_sxVsengLYsr2nCHnjwz_4f9JjYigSg4na2zxLKVqohtVreGD3rzjTL9KRbUVzJXeHS.L4i5vm2TuX7Pzi4ty0arBMgb4hQ5l6Mr8oOsGuJmGguydjmdSO0jPa91dGWpxob42tNuI0QTnq6HKMbITMVCkTsS5mEzpfAPpn09k8Y5hbiHIyRV1PuxOsGf5ifMP_vLib6TdbpU3aufY_3vAMH4Z59m2c3fXCZfQx0rnos91F5S.j6y.TEyA.fo3Qg2uvCfO0sujzZQksuepdioKjau4HpqdetxNWb4wTN2HdzeI795XSkQuePkedkjDCfBVEMR76H9LDVHyrEZvXzKzpU2Cmx_gtK9jwEkZGIKCps4fSHQMfloA__KYJSaOFGVXQYklSrQnMtIEIT5RNVxO483pDXYpQYUhaSV5ERSrwa0oFYw6LKfvN4anzK7b8lN6xEcsKjdgmpd_JP4oxC.f4Vjqo.A5UiyCfeqWyCfD0HHNU9CB5YFcOUM5ApxxSz2PXMk.dRUFC62nyLUOi4_EYjm0BngSCXp1XGlUqvfFBgbT2q7uTjNIH7souKkVaI7GTJdw3SJHOuSzvhzc.psH6Ygtd1GDEz85os_EjFHvrdAVTQrNtyhtNEg4.N1wIdXdXvsggJQ4YWhJdx44d8jfd_EAJY6VafvwWuDvDx6pTZMdi2X0uCmaCie_l_KaS_zZzk.56eHMVlkL2M"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91383dcfcae84e24';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/en\/countries\/bulgaria.html?__cf_chl_rt_tk=rbHqgZBqLeAMx7dAufdQB5AsPVfZA2Bcyfk.vD_WAro-1739821145-1.0.1.1-P2CRcHsQ5ZNXuY3jZLJctn2xNGj.OyB_35i8jHYiZZA" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>