Income per Unit

The following is a summary of basic and diluted income per unit (in thousands, except unit and per unit amounts):



	Three Months Ended March 31,
	2017		2016
Net income available to common unitholders	$	67,049	$	39,788
Weighted average units outstanding—basic	161,474,901		149,047,798
Potentially dilutive common units:
Stock options	4		11,286
Unvested incentive units	237,336		122,601
Forward equity offering	283,388		—
Market performance-based awards	603,900		733,743
Weighted average units outstanding—diluted	162,599,529		149,915,428
Income per unit:
Basic	$	0.42	$	0.27
Diluted	$	0.41	$	0.27

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:



	Three Months Ended March 31,
	2017	2016
Potentially dilutive Series E Cumulative Redeemable Preferred Units	—	3,345,087
Potentially dilutive Series F Cumulative Redeemable Preferred Units	1,783,083	2,121,447
Potentially dilutive Series G Cumulative Redeemable Preferred Units	2,438,074	2,900,732
Potentially dilutive Series H Cumulative Redeemable Preferred Units	3,572,744	4,250,720
Potentially dilutive Series I Cumulative Redeemable Preferred Units	2,440,928	2,904,126
Total	10,234,829	15,522,112