What is the total income taxes paid in 2018 and 2019?
{"Year Ended December 31, -- ": {"2019": 2019, "2018": 2018}, "Supplemental disclosure of cash flow information -- Income taxes paid": {"2019": 318, "2018": 15}, "Supplemental disclosure of cash flow information -- Interest paid": {"2019": 5909, "2018": 5885}, "Supplemental disclosure of cash flow information -- Interest received": {"2019": "\u2014", "2018": 13}, "Noncash investing and financing activities -- Purchases of property and equipment (including internal use software)": {"2019": 1068, "2018": 529}, "Noncash investing and financing activities -- Assignment of NantHealth Labs (see Note 20)": {"2019": "\u2014", "2018": 8956}}
income_tax_2018 = df["Supplemental disclosure of cash flow information -- Income taxes paid"]["2018"]
income_tax_2019 = df["Supplemental disclosure of cash flow information -- Income taxes paid"]["2019"]
answer = income_tax_2018 + income_tax_2019