how to use Countinuous Skewed to fit?

hello i have this data:

x=[0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6];
y=[0 3 8 23 18 13 10 7 5 3 2 1 0];
plot(x,y)

for this curve i want to draw InverseNormal curve fitting (for example) how i can do this?