How do i calculate the free cash flow for this company for 2015, 2014 and 2013.

Period Ending	May 31, 2015	May 31, 2014	May 31, 2013
Net Income	1,050,000	2,324,000	2,716,000
Operating Activities, Cash Flows Provided By or Used In
Depreciation	2,611,000	2,587,000	2,386,000
Adjustments To Net Income	2,142,000	601,000	121,000
Changes In Accounts Receivables	(392,000)	(516,000)	(451,000)
Changes In Liabilities	(33,000)	(688,000)	(325,000)
Changes In Inventories	-	-	-
Changes In Other Operating Activities	(12,000)	(44,000)	241,000
Total Cash Flow From Operating Activities	5,366,000	4,264,000	4,688,000
Investing Activities, Cash Flows Provided By or Used In
Capital Expenditures	(4,347,000)	(3,533,000)	(3,375,000)
Investments	-	-	-
Other Cash flows from Investing Activities	(1,405,000)	(18,000)	(428,000)
Total Cash Flows From Investing Activities	(5,752,000)	(3,551,000)	(3,803,000)
Financing Activities, Cash Flows Provided By or Used In
Dividends Paid	(227,000)	(187,000)	(177,000)
Sale Purchase of Stock	(934,000)	(4,300,000)	34,000
Net Borrowings	2,486,000	1,743,000	1,322,000
Other Cash Flows from Financing Activities	(27,000)	(19,000)	(18,000)
Total Cash Flows From Financing Activities	1,349,000	(2,719,000)	1,184,000
Effect Of Exchange Rate Changes	(108,000)	(3,000)	5,000
Change In Cash and Cash Equivalents	855,000	(2,009,000)	2,074,000