Summary of the status of warrants presented below	Number of Warrants	Weighted Average Exercise Price
Outstanding, beginning of year at Dec. 31, 2013	16,900,539	0.17
Issued	3,149,700	0.16
Exercised	(2,040,000)	0.13
Cancelled	(110,137)	0.31
Expired	(8,847,097)	0.17
Outstanding, end of period at Dec. 31, 2014	9,053,005	0.16
Outstanding, beginning of year at Dec. 31, 2014	9,053,005	0.16
Issued	412,500	0.10
Exercised	0	0.13
Cancelled	0	0.00
Expired	(953,112)	0.13
Outstanding, end of period at Mar. 31, 2015	8,512,393	0.16

Number of share options (or share units) exercised during the current period.