Month	US Dollars, monthly level
2014-01-01	1215642137525.7600
2014-02-01	1126547648642.6802
2014-03-01	1253339640298.9900
2014-04-01	1244187142687.0400
2014-05-01	1227787083296.3098
2014-06-01	1222285442181.0800
2014-07-01	1269028170490.6900
2014-08-01	1149186277605.1200
2014-09-01	1268101560541.5100
2014-10-01	1256502865046.1400
2014-11-01	1160987309769.3100
2014-12-01	1159024247045.9000
2015-01-01	1041248483165.4202
2015-02-01	974878585250.2780
2015-03-01	1109734521405.3300
2015-04-01	1062726607299.5898
2015-05-01	1033752738669.4701
2015-06-01	1111293073487.9900
2015-07-01	1099986965873.4500
2015-08-01	1003347474140.1700
2015-09-01	1084692736019.8599
2015-10-01	1093938920878.7100
2015-11-01	1042077692619.0299
2015-12-01	1039790166850.9000
2016-01-01	919153582240.4341
2016-02-01	940997325532.8120
2016-03-01	1039135627304.4200
2016-04-01	1012804361221.2000
2016-05-01	1021376315587.0300
2016-06-01	1069593133467.4598
2016-07-01	999471884428.0510
2016-08-01	1040560116178.7399
2016-09-01	1080149408762.7900
2016-10-01	1053240912685.0901
2016-11-01	1090734733533.3500
2016-12-01	1063412077265.2200
2017-01-01	1036970734229.7999
2017-02-01	1005656093111.7400
2017-03-01	1172756254178.5400
2017-04-01	1049807581063.4401
2017-05-01	1160185776949.8298
2017-06-01	1147590870755.8599
2017-07-01	1120900125700.8699
2017-08-01	1155130076126.5000
2017-09-01	1201603201903.4102
2017-10-01	1215748505607.6301
2017-11-01	1257598079591.5100
2017-12-01	1198637856585.0600
2018-01-01	1262626845997.9600
2018-02-01	1159277256243.0300
2018-03-01	1299920709995.7400
2018-04-01	1240462574832.1900