Based on URA website, out of total 660 units, 180 were launched. Number of units sold in...
Jan 15 = 54 (8% of total / 30% of launched)
(Returned unit - 1)
Feb 15 = 18 (3% / 10%)
(Returned units - 2)
Mar 15 = 20 (3% / 11%)
2015 Q1 subtotal = 89 (13% / 49%)
Apr 15 = 29 (4% / 16%)
(Returned units - 3)