I am completing my maths coursework and I have a sample size of 138 pairs of data. I have calculated the spearman's rank for my data and need to do an hypothesis test to go with it. I have searched everywhere for a table of critical values for my spearman's that goes past n=100, has anyone ever found one or can tell me how you would work out what the critical value would be at a 5% significance level?

thanks