21. EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per share for the years indicated:

	Years Ended December 31,
	2015		2016		2017
	(In Thousands of US Dollars, except share and per share data)
Numerator:
Net income attributable to Canadian Solar Inc.—basic	$	171,861	$	65,249	$	99,572
Dilutive effect of interest expense of convertible notes		5,275		—		4,649

Net income attributable to Canadian Solar Inc.—diluted	$	177,136	$	65,249	$	104,221


Denominator:
Denominator for basic calculation—weighted average number of common shares—basic		55,728,903		57,524,349		58,167,004
Diluted effects of share number from share options and RSUs		1,343,162		534,714		547,821
Diluted effects of share number from warrants		20,658		—		—
Dilutive effects of share number from convertible notes		3,333,333		—		2,833,333

Denominator for diluted calculation—weighted average number of common shares—diluted		60,426,056		58,059,063		61,548,158


Basic earnings per share	$	3.08	$	1.13	$	1.71


Diluted earnings per share	$	2.93	$	1.12	$	1.69

The following table sets forth anti-dilutive shares excluded from the computation of diluted earnings per share for the years indicated.