How long does it take for a judge to make a decision on my claim? It has been 17 months since my hearing and still has not made a decision,

I applied for social security disability and had my hearing in October of 2017 it has been 17 months since it's been sitting in front of a hearing judge and they still have not made a decision I became disabled hardly unable to work from a car accident in 09 it shouldn't take this long what can I do to speed up the process