What is the total amount of 'Other' for 2018 and 2019?
{"Impairment of assets": {"NOTE": 14, "2019": -102, "2018": -200}, "Equity losses from investments in associates and joint ventures": {"NOTE": 17, "2019": "", "2018": ""}, "Losses on investments": {"NOTE": "", "2019": -53, "2018": -20}, "Operations": {"NOTE": "", "2019": -19, "2018": -15}, "Early debt redemption costs": {"NOTE": 22, "2019": -18, "2018": -20}, "(Losses) gains on retirements and disposals of property, plant and equipment and intangible assets": {"NOTE": "", "2019": -9, "2018": 11}, "Net mark-to-market gains (losses) on derivatives used to economically hedge equity settled share-based compensation plans": {"NOTE": "", "2019": 138, "2018": -80}, "Gains (losses) on investments": {"NOTE": "", "2019": 13, "2018": -34}, "Other": {"NOTE": "", "2019": 37, "2018": 10}, "Total other expense": {"NOTE": "", "2019": -13, "2018": -348}}
other_2019 = df["Other"]["2019"]
other_2018 = df["Other"]["2018"]
answer = other_2019 + other_2018