What was the change in Additions for tax positions related to current year between 2018 and 2019?
{"Beginning balance": {"2019": 256705, "2018": 201355, "2017": 149898}, "Additions for tax positions of prior years": {"2019": 20158, "2018": 14465, "2017": 2155}, "Reductions for tax positions of prior years(1)": {"2019": -106252, "2018": -21045, "2017": -12233}, "Additions for tax positions related to current year(2)": {"2019": 35769, "2018": 81866, "2017": 77807}, "Cash settlements": {"2019": "\u2014", "2018": -1659, "2017": -2298}, "Reductions from lapses in statutes of limitations": {"2019": -2570, "2018": -7496, "2017": -10446}, "Reductions from settlements with taxing authorities(3)": {"2019": -35582, "2018": -5928, "2017": -6061}, "Foreign exchange rate adjustment": {"2019": -3845, "2018": -4853, "2017": 2533}, "Ending balance": {"2019": 164383, "2018": 256705, "2017": 201355}, "Unrecognized tax benefits that would affect the effective tax rate (if recognized)": {"2019": 93237, "2018": 117455, "2017": 75223}}
additions_for_tax_positions_related_to_current_year_2019 = df["Additions for tax positions related to current year(2)"]["2019"]
additions_for_tax_positions_related_to_current_year_2018 = df["Additions for tax positions related to current year(2)"]["2018"]
answer = additions_for_tax_positions_related_to_current_year_2019 - additions_for_tax_positions_related_to_current_year_2018