The azleg.gov numbers tell a different story. The red text is mine, everything else is straight from the then and now comparison published on the site.
Also, I am not sure but suspect that the percentage of the K-12 money going to district public schools has declined by more than the illustrated 5% due to shifts in money to charter schools and empowerment scholarships.
Whether you think this is good or bad is your own opinion, however, please get the facts straight!