For Fiscal year 2019, what is the Foreign income expressed as a percentage of Income before income taxes?
{"Domestic income (loss)": {"2019": 269331, "2018": 238405, "2017": 110562}, "Foreign income": {"2019": 171243, "2018": 147721, "2017": 138989}, "Income before income taxes": {"2019": 440574, "2018": 386126, "2017": 249551}}
foreign_income_2019 = df["Foreign income"]["2019"]
income_before_income_taxes_2019 = df["Income before income taxes"]["2019"]
answer = foreign_income_2019 / income_before_income_taxes_2019 * 100.0