What was the total net revenues in 2019 of Americas and EMEA?
{"Net revenues by geographic region: -- Americas": {"2019": 3341, "2018": 3880, "Increase/ (decrease)": -539, "% Change": -14}, "Net revenues by geographic region: -- EMEA (1)": {"2019": 2239, "2018": 2618, "Increase/ (decrease)": -379, "% Change": -14}, "Net revenues by geographic region: -- Asia Pacific": {"2019": 909, "2018": 1002, "Increase/ (decrease)": -93, "% Change": -9}, "Net revenues by geographic region: -- Consolidated net revenues": {"2019": 6489, "2018": 7500, "Increase/ (decrease)": -1011, "% Change": -13}}
total_revenue_2019_Americas = df["Net revenues by geographic region: -- Americas"]["2019"]
total_revenue_2019_EMEA = df["Net revenues by geographic region: -- EMEA (1)"]["2019"]
answer = total_revenue_2019_Americas + total_revenue_2019_EMEA