What was the change in the Additions for current year tax positions from 2018 to 2019?
{"Beginning balance of unrecognized tax benefits": {"2019": 469, "2018": 326, "2017": 250}, "Additions for current year tax positions": {"2019": 106, "2018": 142, "2017": 65}, "Reductions for prior year tax positions": {"2019": "\u2014", "2018": -14, "2017": "\u2014"}, "Ending balance (excluding interest and penalties)": {"2019": 575, "2018": 454, "2017": 315}, "Interest and penalties": {"2019": 22, "2018": 15, "2017": 11}, "Total": {"2019": 597, "2018": 469, "2017": 326}}
additions_for_current_year_tax_positions_2019 = df["Additions for current year tax positions"]["2019"]
additions_for_current_year_tax_positions_2018 = df["Additions for current year tax positions"]["2018"]
answer = additions_for_current_year_tax_positions_2019 - additions_for_current_year_tax_positions_2018