What is the increase / (decrease) in total assets from 2018 to 2019?
{"Cash and cash equivalents": {"2019": 12391, "2018": 11066, "% Change": 12}, "Trade and other receivables": {"2019": 18894, "2018": 18455, "% Change": 2}, "Other current financial assets": {"2019": 10669, "2018": 9427, "% Change": 13}, "Contract assets": {"2019": 10309, "2018": 8912, "% Change": 16}, "Inventories": {"2019": 14806, "2018": 13885, "% Change": 7}, "Current income tax assets": {"2019": 1103, "2018": 1010, "% Change": 9}, "Other current assets": {"2019": 1960, "2018": 1707, "% Change": 15}, "Assets classified as held for disposal": {"2019": 238, "2018": 94, "% Change": 154}, "Total current assets": {"2019": 70370, "2018": 64556, "% Change": 9}, "Goodwill": {"2019": 30160, "2018": 28344, "% Change": 6}, "Other intangible assets": {"2019": 9800, "2018": 10131, "% Change": -3}, "Property, plant and equipment": {"2019": 12183, "2018": 11381, "% Change": 7}, "Investments accounted for using the equity method": {"2019": 2244, "2018": 2579, "% Change": -13}, "Other financial assets": {"2019": 19843, "2018": 17774, "% Change": 12}, "Deferred tax assets": {"2019": 3174, "2018": 2341, "% Change": 36}, "Other assets": {"2019": 2475, "2018": 1810, "% Change": 37}, "Total non-current assets": {"2019": 79878, "2018": 74359, "% Change": 7}, "Total assets": {"2019": 150248, "2018": 138915, "% Change": 8}}
total_assets_2019 = df["Total assets"]["2019"]
total_assets_2018 = df["Total assets"]["2018"]
answer = total_assets_2019 - total_assets_2018