Calculating the correlation of rankings


For some work I have 5 participants who are to create an ordinal rank 5 parameters based on a question I set them. This will give a results table that looks something like the attachment called "ranking" or in an alternative form "ranking alt".

What I would like to do is present a measure for how similar they all are, i.e. all rankings are 0.7 similar with 1 being all the same and -1 being totally different.

Any help would be most appreciated!