How many shares were purchased in 2019?
{"December 1 - December 31, 2018": {"Total Number of Shares Purchased": 75000.0, "Average Price Paid per Share (1)": 12.96, "Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs": 75000.0, "Approximate Dollar Value of Shares that may be Purchased Under the Plans or Programs (2)": 19028173.0}, "January 1 - January 31, 2019": {"Total Number of Shares Purchased": 524577.0, "Average Price Paid per Share (1)": 14.0, "Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs": 524577.0, "Approximate Dollar Value of Shares that may be Purchased Under the Plans or Programs (2)": 11685543.0}, "February 1 - February 28, 2019": {"Total Number of Shares Purchased": 116042.0, "Average Price Paid per Share (1)": 14.53, "Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs": 116042.0, "Approximate Dollar Value of Shares that may be Purchased Under the Plans or Programs (2)": 10000013.0}, "Total": {"Total Number of Shares Purchased": 715619.0, "Average Price Paid per Share (1)": 13.97, "Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs": 715619.0, "Approximate Dollar Value of Shares that may be Purchased Under the Plans or Programs (2)": 10000013.0}}
january_total_shares = df["January 1 - January 31, 2019"]["Total Number of Shares Purchased"]
february_total_shares = df["February 1 - February 28, 2019"]["Total Number of Shares Purchased"]
answer = january_total_shares + february_total_shares