date,EW,VW
19800630,0.053875,0.210276
19800930,0.015671,0.033562
19801231,0.022737,-0.031287
19810331,0.486312,0.135672
19810630,0.004115,0.009411
19810930,0.138932,0.10131
19811231,0.059996,0.030565
19820331,0.005836,-0.107887
19820630,0.072693,0.028747
19820930,-0.065854,-0.040708
19821231,-0.042033,-0.014636
19830331,0.4048,0.396267
19830630,0.094271,0.233427
19830930,0.150678,0.17526
19831231,0.112843,0.065702
19840331,0.385498,0.271346
19840630,-0.092418,-0.063485
19840930,0.074932,0.07039
19841231,0.112437,0.107288
19850331,0.077328,0.065726
19850630,0.010487,0.042079
19850930,0.097907,0.113652
19851231,0.108066,0.136093
19860331,-0.044264,-0.071181
19860630,-0.025157,0.072719
19860930,0.022263,0.034774
19861231,-0.012689,-0.001292
19870331,0.067862,0.11704
19870630,0.08499,0.132743
19870930,0.231375,0.301369
19871231,-0.315572,-0.360096
19880331,0.140988,0.21139
19880630,-0.059517,0.048288
19880930,-0.014172,-0.000237
19881231,0.167587,0.211672
19890331,0.257673,0.356233
19890630,0.084184,0.097019
19890930,0.110461,0.114434
19891231,-0.007993,0.028636
19900331,0.207082,0.20452
19900630,-0.006118,-0.013366
19900930,-0.107002,-0.031193
19901231,-0.138361,-0.136358
19910331,0.07095,0.091682
19910630,-0.013321,0.038081
19910930,-0.0295,0.003669
19911231,-0.156549,-0.137607
19920331,0.017589,0.064988
19920630,0.007732,-0.024331
19920930,-0.23723,-0.12485
19921231,0.070453,0.134109
19930331,0.389552,0.20476
19930630,0.241707,0.129101
19930930,0.156913,0.138123
19931231,0.147197,0.159448
19940331,0.095438,0.055198
19940630,-0.055233,-0.044913
19940930,-0.030302,0.011047
19941231,0.063926,0.108581
19950331,-0.017999,-0.072098
19950630,0.163853,0.161974
19950930,0.10443,0.06881
19951231,0.011733,0.00659
19960331,0.126027,0.063493
19960630,0.071894,0.116377
19960930,0.034406,0.014356
19961231,0.176591,0.161673
19970331,0.154836,0.112683
19970630,0.061366,0.133686
19970930,0.152963,0.170103
19971231,-0.027704,-0.016319
19980331,0.047283,0.109448
19980630,-0.030442,-0.030965
19980930,-0.248347,-0.275097
19981231,-0.058633,0.082056
19990331,0.16574,0.158156
19990630,0.186756,0.130437
19990930,0.028715,0.055183
19991231,0.198017,0.361411
20000331,0.144684,0.077792
20000630,0.021181,0.072313
20000930,0.089207,0.144045
20001231,-0.113777,-0.053201
20010331,0.017418,-0.017728
20010630,0.015722,0.053103
20010930,-0.14813,-0.155184
20011231,0.104748,0.148551
20020331,0.114884,0.107865
20020630,-0.07853,-0.119333
20020930,-0.198494,-0.183044
20021231,0.036909,0.062531
20030331,-0.011063,-0.075875
20030630,0.250191,0.276433
20030930,0.109948,0.066898
20031231,0.177996,0.234307
20040331,0.140695,0.14465
20040630,0.027373,0.06327
20040930,0.067955,0.096218
20041231,0.138254,0.075617
20050331,0.129841,0.112624
20050630,0.107864,0.146968
20050930,0.177497,0.190462
20051231,0.059285,0.025436
20060331,0.155829,0.21261
20060630,-0.027428,-0.040128
20060930,0.026616,0.00817
20061231,0.131751,0.191294
20070331,0.05283,0.048273
20070630,0.084119,0.142124
20070930,-0.039429,-0.007432
20071231,-0.027987,0.026452
20080331,-0.112029,-0.137751
20080630,0.032891,0.136495
20080930,-0.168781,-0.242723
20081231,-0.221061,-0.227163
20090331,-0.020734,0.014988
20090630,0.293505,0.262288
20090930,0.124287,0.169734
20091231,0.094545,0.14464
20100331,0.088699,0.034019
20100630,-0.077254,-0.090118
20100930,0.072646,0.155685
20101231,0.158041,0.170093
20110331,0.058283,0.034655
20110630,-0.042535,-0.032974
20110930,-0.127099,-0.131296
20111231,0.026544,0.122486
20120331,0.120205,0.110222
20120630,-0.027727,-0.037436
20120930,0.035716,0.093611
20121231,0.032039,0.004237
20130331,0.115462,0.076604
20130630,0.026963,0.009831
20130930,0.075271,0.081197
20131231,0.081335,0.095876
20140331,0.044084,0.030813
20140630,0.052523,0.106967
20140930,-0.010089,0.006865
20141231,-0.042019,-0.008381
20150331,0.059984,0.090616
20150630,0.053543,0.025767
20150930,-0.014054,-0.032976
20151231,0.066697,0.072022
20160331,0.016386,-0.037843
20160630,0.036709,0.065455
20160930,0.079093,0.042317
20161231,0.131293,0.135362
20170331,0.037819,0.019974
20170630,0.031972,0.031061
20170930,0.065512,0.133147
20171231,0.028932,0.056852
20180331,-0.003707,0.006529
20180630,0.092775,0.12233
20180930,0.038699,0.073175
20181231,-0.131393,-0.123939
20190331,0.094917,0.099356
20190630,0.022702,0.016201
20190930,0.022961,0.030264
20191231,0.115881,0.060063
20200331,-0.217178,-0.191756
20200630,0.217837,0.13161