Fluor stock is up 365% over the past five years.Fluor (FLR -0.57%) investors have been very happy over the last five years. Over that time period, shares have risen in value by roughly 365%. That's a compound annual growth rate of 36%, more than 3 times the stock market's long-term average.Is Fluor your secret to retiring a millionaire? The answer might surprise you.Two things to know about Fluor's operating historyAt its core, Fluor is an engineering and construction company. It serves a variety of sectors ...