你知道恩格尔系数是什么吗？
恩格尔系数是食品支出总额占个人消费支出总额的比重。[{'character': '恩', 'pinyin': 'en1', 'highest pitch': 11.12, 'lowest pitch': 10.14, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '格', 'pinyin': 'ge2', 'highest pitch': 10.59, 'lowest pitch': 9.25, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '尔', 'pinyin': 'er3', 'highest pitch': 9.25, 'lowest pitch': 7.08, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '系', 'pinyin': 'xi4', 'highest pitch': 8.62, 'lowest pitch': 7.08, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '数', 'pinyin': 'shu4', 'highest pitch': 10.65, 'lowest pitch': 7.25, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.06}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 8.2, 'lowest pitch': 7.79, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '食', 'pinyin': 'shiii2', 'highest pitch': 9.16, 'lowest pitch': 7.79, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '品', 'pinyin': 'pin3', 'highest pitch': 8.59, 'lowest pitch': 5.72, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '支', 'pinyin': 'zhiii1', 'highest pitch': 8.58, 'lowest pitch': 5.94, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '出', 'pinyin': 'chu1', 'highest pitch': 9.66, 'lowest pitch': 8.3, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '总', 'pinyin': 'zong3', 'highest pitch': 8.42, 'lowest pitch': 4.63, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '额', 'pinyin': 'e2', 'highest pitch': 7.18, 'lowest pitch': 4.82, 'duration': 0.29, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '占', 'pinyin': 'zhan4', 'highest pitch': 9.62, 'lowest pitch': 8.55, 'duration': 0.29, 'prosody hierarchy': '#2'}, {'character': '个', 'pinyin': 'ge4', 'highest pitch': 10.88, 'lowest pitch': 8.67, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 9.11, 'lowest pitch': 7.91, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '消', 'pinyin': 'xiao1', 'highest pitch': 11.02, 'lowest pitch': 8.94, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '费', 'pinyin': 'fei4', 'highest pitch': 11.28, 'lowest pitch': 7.19, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '支', 'pinyin': 'zhiii1', 'highest pitch': 8.58, 'lowest pitch': 7.19, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '出', 'pinyin': 'chu1', 'highest pitch': 9.66, 'lowest pitch': 7.54, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '总', 'pinyin': 'zong3', 'highest pitch': 8.42, 'lowest pitch': 5.8, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '额', 'pinyin': 'e2', 'highest pitch': 7.18, 'lowest pitch': 5.62, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.3, 'lowest pitch': 6.22, 'duration': 0.09, 'prosody hierarchy': '#1'}, {'character': '比', 'pinyin': 'bi3', 'highest pitch': 8.23, 'lowest pitch': 4.4, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '重', 'pinyin': 'zhong4', 'highest pitch': 8.05, 'lowest pitch': 6.95, 'duration': 0.26, 'prosody hierarchy': '#4'}]