I have a cube that contains data from the last four years. The cube is quite large, and takes about five hours to build. Last year and previous data is closed and so is does not changed, yet I still include it in the build since users want to trend over all the years in a single graph. If I split up the cubes by year, then I only have to build the current year, but I'm not sure that I can trend over the past four years on a single graph. Does anyone know of a way to do a multiple year graph over several cubes?