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Number of patent applications on information and communication technology to the European patent office (Units per million of inhabitants)
1990 | 2000 | 2005 | 2010 | 2011 | 2012 |
Sofia (stolitsa) | | 0,55 | 2,38 | 1,30 | 4,20 | 2,57 |
Vidin | | | | | | 1,71 |
Plovdiv | | 0,45 | | 0,73 | 0,98 | 0,25 |
Gabrovo | | | | | 5,45 | |
Varna | | | 0,72 | | 1,05 | |
Montana (BG312) | | | 2,94 | | | |
Pazardzhik | 3,05 | | 1,10 | | | |
Blagoevgrad | | | 0,99 | | | |
Sofia | | | 3,82 | | | |