Year,non-permafrost (Tg),sporadic (Tg),discontinuous (Tg),continuous (Tg) 2011,1.2936935,0.20505424,0.116906896,0.31545538 2012,1.0145781,0.20619458,0.12761241,0.20929419 2013,1.121854,0.20925066,0.09953062,0.27704942 2014,1.2483966,0.29441187,0.18341732,0.32789415 2015,1.2755041,0.21031955,0.15063682,0.24911593 2016,1.3787525,0.27181557,0.13220857,0.20123085 2017,1.2687116,0.26620147,0.12180882,0.25434715 2018,1.1027323,0.30242375,0.16278741,0.26107258 2019,1.0634652,0.23149069,0.124469325,0.16105005 2020,1.2165785,0.25034302,0.14460409,0.25371066 2021,1.1956677,0.23015319,0.12951721,0.2718637