Supplemental disclosure of cash flow information

12 Months Ended

Dec. 31, 2016

22. Supplemental disclosure of cash flow information

	Year Ended December 31,
	2016		2015		2014
Interest paid in cash	$	74,898	$	147,546	$	196,768

Non-cash transactions:
Transfers from inventory to property plant and equipment and construction in progress	$	276,807	$	123,036	$	168,622
Transfers from construction in progress to property, plant and equipment	$	3,542,119	$	2,694,733	$	2,693,622

Issuance of 25,156, 10,514, and 18,294, respectively, shares of common stock for services rendered	$	278,388	$	119.018	$	263,098
Issuance of 8,421, 8,615, and 5,957, respectively, shares of redeemable preferred stock for services rendered	$	111,410	$	110,703	$	65,289
Conversion (on a one-to-one basis) of 11,558, 7,195, and 4,756, respectively, shares of redeemable preferred stock to common stock	$	6,935	$	4,317	$	2,854
Dividends declared but not paid	$	1,118,017	$	1,111,501	$	1,106,456