What was the percentage change in the Net cash provided by operating activities between 2017 and 2018?
{"Net cash provided by operating activities": {"Year Ended December 31, 2019": 96112, "Year Ended December 31, 2018": 55637, "Year Ended December 31, 2017": 48117}, "Net cash (used in)/ provided by investing activities": {"Year Ended December 31, 2019": -56467, "Year Ended December 31, 2018": 27863, "Year Ended December 31, 2017": -42365}, "Net cash used in financing activities": {"Year Ended December 31, 2019": -111692, "Year Ended December 31, 2018": -66916, "Year Ended December 31, 2017": -12940}, "(Decrease)/Increase in cash and cash equivalents and restricted cash": {"Year Ended December 31, 2019": -72047, "Year Ended December 31, 2018": 16584, "Year Ended December 31, 2017": -7188}, "Cash and cash equivalents and restricted cash, beginning of year": {"Year Ended December 31, 2019": 150774, "Year Ended December 31, 2018": 134190, "Year Ended December 31, 2017": 141378}, "Cash and cash equivalents and restricted cash, end of year": {"Year Ended December 31, 2019": 78727, "Year Ended December 31, 2018": 150774, "Year Ended December 31, 2017": 134190}}
net_cash_2018 = df["Net cash provided by operating activities"]["Year Ended December 31, 2018"]
net_cash_2017 = df["Net cash provided by operating activities"]["Year Ended December 31, 2017"]
answer = ( net_cash_2018 - net_cash_2017 ) / net_cash_2017 * 100.0