What was the change in income from International entities between 2018 and 2019?
{"U.S. entities": {"2019": -29829, "2018": -74131, "2017": 26552}, "International entities": {"2019": 5052, "2018": 40760, "2017": 18135}, "Total": {"2019": -24777, "2018": -33371, "2017": 44687}}
international_entities_2019 = df["International entities"]["2019"]
international_entities_2018 = df["International entities"]["2018"]
answer = international_entities_2019 - international_entities_2018