What is the change in Net sales of EMEA between 2018 and 2019?
{"NorthAmerica": {"2019": 871114.0, "% of Net\nSales": 14.5, "2018": 732695.0, "% of Net Sales": 13.7}, "EMEA": {"2019": 227083.0, "% of Net\nSales": 14.9, "2018": 221467.0, "% of Net Sales": 14.5}, "APAC": {"2019": 39901.0, "% of Net\nSales": 22.1, "2018": 39556.0, "% of Net Sales": 21.2}, "Consolidated": {"2019": 1138098.0, "% of Net\nSales": 14.7, "2018": 993718.0, "% of Net Sales": 14.0}}
emea_2019 = df["EMEA"]["2019"]
emea_2018 = df["EMEA"]["2018"]
answer = emea_2019 - emea_2018