变动日期	营业利润率
2019-06-30	26.4694
2019-03-31	13.3465
2018-12-31	21.5262
2018-09-30	22.6760
2018-06-30	22.1033
2018-03-31	10.2092
2017-12-31	15.5466
2017-09-30	17.0204
2017-06-30	18.7724
2017-03-31	20.4168
2016-12-31	14.4036
2016-09-30	19.2219
2016-06-30	19.2686
2016-03-31	17.1030
2015-12-31	16.6590
2015-09-30	20.1092
2015-06-30	20.4262
2015-03-31	20.8667
2014-12-31	18.2275
2014-09-30	18.9962
2014-06-30	18.7137
2014-03-31	18.4104
2013-12-31	15.7130
2013-09-30	16.4848
2013-06-30	16.0414
2013-03-31	16.5851
2012-12-31	12.1193
2012-09-30	12.6963
2012-06-30	13.2927
2012-03-31	15.3374
2011-12-31	17.0554
2011-09-30	16.6745
2011-06-30	16.0461
2011-03-31	17.1559
2010-12-31	16.1980
2010-09-30	16.8927
2010-06-30	16.4327
2010-03-31	14.1983
2009-12-31	13.1599
2008-12-31	10.5880
2007-12-31	11.9331