What is the change in the total accumulated depreciation in 2019?
{"COST -- January 1, 2019": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": 3329, "LAND AND BUILDINGS": 2453, "TOTAL": 5782}, "COST -- Additions": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": 527, "LAND AND BUILDINGS": 513, "TOTAL": 1040}, "COST -- Transfers": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": -233, "LAND AND BUILDINGS": "\u2013", "TOTAL": -233}, "COST -- Acquired through business combinations": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": "\u2013", "LAND AND BUILDINGS": 8, "TOTAL": 8}, "COST -- Lease terminations": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": -12, "LAND AND BUILDINGS": -38, "TOTAL": -50}, "COST -- Impairment losses recognized in earnings": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": -2, "LAND AND BUILDINGS": -3, "TOTAL": -5}, "COST -- December 31, 2019": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": 3609, "LAND AND BUILDINGS": 2933, "TOTAL": 6542}, "ACCUMULATED DEPRECIATION -- January 1, 2019": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": 1042, "LAND AND BUILDINGS": 536, "TOTAL": 1578}, "ACCUMULATED DEPRECIATION -- Depreciation": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": 373, "LAND AND BUILDINGS": 303, "TOTAL": 676}, "ACCUMULATED DEPRECIATION -- Transfers": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": -111, "LAND AND BUILDINGS": "\u2013", "TOTAL": -111}, "ACCUMULATED DEPRECIATION -- Lease terminations": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": -3, "LAND AND BUILDINGS": -22, "TOTAL": -25}, "ACCUMULATED DEPRECIATION -- December 31, 2019": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": 1301, "LAND AND BUILDINGS": 817, "TOTAL": 2118}, "NET CARRYING AMOUNT -- January 1, 2019": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": 2287, "LAND AND BUILDINGS": 1917, "TOTAL": 4204}, "NET CARRYING AMOUNT -- December 31, 2019": {"NETWORK INFRASTRUCTURE AND EQUIPMENT": 2308, "LAND AND BUILDINGS": 2116, "TOTAL": 4424}}
accumulated_depreciation_2019 = df["ACCUMULATED DEPRECIATION -- December 31, 2019"]["TOTAL"]
accumulated_depreciation_2018 = df["ACCUMULATED DEPRECIATION -- January 1, 2019"]["TOTAL"]
answer = accumulated_depreciation_2019 - accumulated_depreciation_2018