Thread Subject: Non-polynomial Curve Fit problem

Below is my figure data:

x=[-28.87 -27.35 -18.67 -22.42 -34.53 -52.73 -60.72 -68.06 -87.41 -94.16]';
y=[-11.56 -5.57 3.26 7.15 7.69 5.82 7.99 10.45 2.70 0];
plot(x,y,'ro-');
grid;
axis equal;

I want to make a curve fit which can keep the shape of the path of the figure above, especially in the right side where there is a ear or shoulder shape.

Thanks