Blooming phaleonopsis

I have a NOID phaleonopsis that bloomed today. It is from a branching of a previously bloomed spike. This is probably my oldest orchid, about 7 years maybe?  It hasn't really gotten any bigger as it looses leaves at the same rate they grow. I have that problem with all my orchids. How do I get it to grow more leaves? It seems like I only get 1 per year.