How many league of communists have the municipality of bar?
{'header': ['Municipality', 'League of Communists', 'Peoples Party', 'Union of Reform Forces', 'Democratic Coalition', 'DSSP', 'Total seats'], 'page_title': '', 'page_id': '', 'types': ['text', 'real', 'real', 'real', 'real', 'real', 'real'], 'id': '1-15306124-1', 'section_title': '', 'caption': '', 'rows': [['Bar', '21', '1', '29', '4', '0', '55'], ['Bijelo Polje', '30', '10', '2', '23', '0', '65'], ['Budva', '28', '7', '5', '0', '0', '40'], ['Cetinje', '36', '0', '11', '0', '0', '47'], ['Danilovgrad', '42', '2', '1', '0', '0', '45'], ['Herceg Novi', '40', '15', '8', '0', '2', '65'], ['Ivangrad', '36', '10', '3', '6', '0', '55'], ['Kolašin', '40', '8', '1', '0', '0', '49'], ['Kotor', '40', '9', '16', '0', '0', '65'], ['Mojkovac', '55', '8', '0', '0', '0', '63'], ['Nikšić', '65', '4', '0', '0', '0', '69'], ['Plav', '13', '0', '26', '6', '0', '45'], ['Plužine', '25', '6', '0', '0', '0', '31'], ['Pljevlja', '32', '17', '0', '6', '0', '55'], ['Rožaje', '8', '0', '12', '44', '0', '64'], ['Šavnik', '33', '2', '0', '0', '0', '35'], ['Titograd', '68', '8', '11', '4', '0', '91'], ['Tivat', '23', '5', '17', '0', '0', '45'], ['Ulcinj', '8', '0', '7', '30', '0', '45']], 'name': 'table_15306124_1'}