What was the percentage change in comprehensive income between 2017 and 2018?
{"Net income": {"2019": 67062, "2018": 68921, "2017": 5135}, "Other comprehensive income (loss): -- Foreign currency translation adjustments": {"2019": 1034, "2018": -15261, "2017": 16744}, "Other comprehensive income (loss): -- Total other comprehensive income (loss)": {"2019": 1034, "2018": -15261, "2017": 16744}, "Other comprehensive income (loss): -- Comprehensive income": {"2019": 68096, "2018": 53660, "2017": 21879}}
comprehensive_income_2018 = df["Other comprehensive income (loss): -- Comprehensive income"]["2018"]
comprehensive_income_2017 = df["Other comprehensive income (loss): -- Comprehensive income"]["2017"]
answer = (comprehensive_income_2018 - comprehensive_income_2017) / comprehensive_income_2017 * 100.0