That sucks. I have been on finasteride the same amount of time, 1 year and 6 months and it has stopped my hair loss a long time ago. About a month in to treatment.
But like you, I have gotten no regrowth[no good regrowth], no thickness. Luckily my hair loss has not gotten any worse because of fin. I will be joining the Dutasteride crew later this year. Good luck.