I have a table that lists sponsorships that we receive every year for our conference. This may not have been the best way to do it, but the way i have it is that a sponsor is added as a record every year and the year is listed in the next column. The result is that the sponsor may show up a few times but when sorted by year i see their history (i.e- Sponsor A sponsored for 3 years in a row and increased their sponsorship every year).
Now i have an interface that shows lots of data as a dashboard ($ we received every year, # of sponsors this year etc). From the sponsorship table, I want to have a number element that shows how many sponsors sponsored us more than 1 time (as in- looking at those records that show up more than once and have a matching name and understanding from that they've come back). Any ideas on how to do this?