Year	Percent Change From Preceding Period
2012-01-01	34.04997198465350
2013-01-01	-1.69958583720024
2014-01-01	21.46777916541710
2015-01-01	117.39495051515600
2016-01-01	142.48491040420700
2017-01-01	34.62908474369730
2018-01-01	71.89550299610020
2019-01-01	100.68650727401100