Update MPI to show a minimum of a rolling 24 months worth of Data

Updating MPI to show a  minimum of a rolling 24 months of data would allow better data analysis for marketing teams. 

This need increased due to the pandemic as sales and marketing cycles in 2019 were very different than in 2020.  Not having access to 2019 is proving to be a bit of a challenge as we try and compare traditional 2019 cycles with how we're tracking in 2021.