What was the change in GILTI Tax between 2018 and 2019?
{"Income taxes per federal statutory rate": {"2019": 14111, "2018": 36199, "2017": 69348}, "State income taxes, net of federal deduction": {"2019": 10, "2018": 2372, "2017": 1794}, "Transition tax - U.S. Tax Reform": {"2019": "\u2014", "2018": 1174, "2017": 61690}, "Corporate tax rate changes - U.S. Tax Reform": {"2019": "\u2014", "2018": -652, "2017": 11177}, "Tax benefit associated with inverter business wind down": {"2019": "\u2014", "2018": "\u2014", "2017": -33837}, "Stock based compensation": {"2019": -97, "2018": -974, "2017": -5263}, "GILTI Tax": {"2019": 8796, "2018": 13064, "2017": "\u2014"}, "Tax effect of foreign operations": {"2019": -13086, "2018": -19162, "2017": -47482}, "Uncertain tax position": {"2019": -4487, "2018": -3088, "2017": 4948}, "Unremitted earnings": {"2019": 1624, "2018": 2564, "2017": "\u2014"}, "Tax credits": {"2019": -6280, "2018": -9844, "2017": -658}, "Change in valuation allowance": {"2019": 7222, "2018": -1306, "2017": 841}, "Withholding taxes": {"2019": 6500, "2018": 1371, "2017": "\u2014"}, "Other permanent items, net": {"2019": -3614, "2018": 3509, "2017": -468}, "Total provision for income taxes": {"2019": 10699, "2018": 25227, "2017": 62090}}
gilti_tax_2019 = df["GILTI Tax"]["2019"]
gilti_tax_2018 = df["GILTI Tax"]["2018"]
answer = gilti_tax_2019 - gilti_tax_2018