What is the change in net cash provided by operating activities between 2019 and 2018?
{"Year Ended December 31, -- ": {"2019": 2019, "2018": 2018}, "(In thousands) -- Net cash provided by operating activities": {"2019": 11236, "2018": 5317}, "(In thousands) -- Net cash used in investing activities": {"2019": -1147, "2018": -3685}, "(In thousands) -- Net cash used in financing activities": {"2019": -9106, "2018": -5292}, "(In thousands) -- Effect of exchange rate changes on cash, cash equivalents and restricted cash": {"2019": 266, "2018": -880}, "(In thousands) -- Net increase (decrease) in cash, cash equivalents and restricted cash": {"2019": 1249, "2018": -4540}}
net_cash_2019 = df["(In thousands) -- Net cash provided by operating activities"]["2019"]
net_cash_2018 = df["(In thousands) -- Net cash provided by operating activities"]["2018"]
answer = net_cash_2019 - net_cash_2018