If your bulb bloomed at Xmas '14 and spent the summer outside last year, it is healthy (hence the new leaves) but it may not bloom this year at all. After the 2014 Xmas blooms for you, the bulb may have been so depleted, from the grower's special forcing process, that even with good care in the summer, it did not have the reserves necessary to form the new flowers, which would have appeared this winter/spring. It can sometimes take 2 or even 3 years of care, before the bulb will bloom again. As long as you got leaves your bulb is fine. Those leaves are making the sugar necessary to rebuild the bulb. And occasionally, these "no-show" bulbs will surprise you, and send up a very late bloom if they have had a good summer. Flowers buds are formed, deep in the bulb, the summer before they appear.
