What percentage of The Bronx voters occured when Manhattan had 29.9% of voters?
{'header': ['1953', 'party', 'Manhattan', 'The Bronx', 'Brooklyn', 'Queens', 'Richmond [Staten Is.]', 'Total', '%'], 'page_title': 'New York City mayoral elections', 'section_title': '1953', 'caption': '1953', 'rows': [['Robert F. Wagner, Jr.', 'Democratic', '236,960', '206,771', '339,970', '207,918', '31,007', '1022626', '45.6%'], ['Robert F. Wagner, Jr.', 'Democratic', '47.9%', '46.2%', '46.6%', '40.6%', '51.8%', '1022626', '45.6%'], ['Harold Riegelman', 'Republican', '147,876', '97,224', '183,968', '208,829', '23,694', '661591', '29.5%'], ['Harold Riegelman', 'Republican', '29.9%', '21.7%', '25.2%', '40.8%', '39.6%', '661591', '29.5%'], ['Rudolph Halley', 'Liberal', '76,884', '112,825', '162,275', '73,192', '3,514', '428690', '19.1%'], ['Rudolph Halley', 'Independent', '7,648', '9,853', '13,264', '7,356', '295', '38416', '1.7%'], ['Rudolph Halley', 'Total', '84,532', '122,678', '175,539', '80,548', '3,809', '467106', '20.8%'], ['Rudolph Halley', 'Total', '17.1%', '27.4%', '24.1%', '15.7%', '6.4%', '467106', '20.8%'], ['Clifford T. McAvoy', 'American Labor Party', '14,904', '13,290', '17,337', '7,182', '332', '53045', '2.4%'], ['David L. Weiss', 'Socialist Workers', '10,683', '7,760', '13,062', '7,254', '1,019', '2054', '0.1%'], ['Nathan Karp', "Industrial Gov't [SLP ]", '10,683', '7,760', '13,062', '7,254', '1,019', '916', '.04%'], ['scattered', 'scattered', '10,683', '7,760', '13,062', '7,254', '1,019', '180', '.01%'], ['unrecorded (blank, spoiled, etc.)', 'unrecorded (blank, spoiled, etc.)', '10,683', '7,760', '13,062', '7,254', '1,019', '36630', '1.6%']]}