变动日期	经营现金净流量对负债比率
2019-06-30	0.0841
2019-03-31	-0.0164
2018-12-31	0.1109
2018-09-30	0.0958
2018-06-30	-0.0650
2018-03-31	-0.0315
2017-12-31	0.6211
2017-09-30	0.5384
2017-06-30	0.3396
2017-03-31	0.1936
2016-12-31	0.7756
2016-09-30	0.6912
2016-06-30	0.4375
2016-03-31	0.2464
2015-12-31	0.2606
2015-09-30	0.0447
2015-06-30	0.1053
2015-03-31	0.0242
2014-12-31	0.3732
2014-09-30	0.2995
2014-06-30	0.1772
2014-03-31	0.1194
2013-12-31	0.7908
2013-09-30	0.6659
2013-06-30	0.4953
2013-03-31	0.3190
2012-12-31	0.2731
2012-09-30	0.0336
2012-06-30	-0.0092
2012-03-31	-0.1488
2011-12-31	0.1634
2011-09-30	0.1377
2011-06-30	0.0872
2011-03-31	-0.0300
2010-12-31	0.2901
2010-09-30	0.2011
2010-06-30
2010-03-31
2009-12-31	0.3813
2008-12-31	0.5134
2007-12-31	-0.1332